BAS Ice Dynamics and Paleoclimate
Lead Research Organisation:
British Antarctic Survey
Department Name: UNLISTED
Abstract
Abstracts are not currently available in GtR for all funded research. This is normally because the abstract was not required at the time of proposal submission, but may be because it included sensitive information such as personal details.
Organisations
- British Antarctic Survey (Lead Research Organisation)
- UNIVERSITY OF OXFORD (Collaboration)
- University of Wisconsin-Madison (Collaboration)
- CECs, Centro de Estudios CientÃficos (Collaboration)
- University of Otago (Collaboration)
- National Centre for Polar and Ocean Research (Collaboration)
- Swiss Federal Institute for Forest, Snow and Landscape Research (Collaboration)
- Penn State University (Collaboration)
- UNIVERSITY OF LEEDS (Collaboration)
- UNIVERSITY OF LIVERPOOL (Collaboration)
- Russian Academy of Sciences (Collaboration)
- Alfred-Wegener Institute for Polar and Marine Research (Collaboration)
Publications
Agnew R
(2023)
Measuring seismic attenuation in polar firn: method and application to Korff Ice Rise, West Antarctica
in Journal of Glaciology
Albert MR
(2020)
Advances in Terrestrial Drilling: Ground, Ice, and Underwater
Alley R
(2021)
Bedforms of Thwaites Glacier, West Antarctica: Character and Origin
in Journal of Geophysical Research: Earth Surface
Allin S
(2015)
Chlorine isotope composition in chlorofluorocarbons CFC-11, CFC-12 and CFC-113 in firn, stratospheric and tropospheric air
in Atmospheric Chemistry and Physics
Angelliaume S
(2017)
Multifrequency Radar Imagery and Characterization of Hazardous and Noxious Substances at Sea
in IEEE Transactions on Geoscience and Remote Sensing
Angelliaume S
(2018)
SAR Imagery for Detecting Sea Surface Slicks: Performance Assessment of Polarization-Dependent Parameters
in IEEE Transactions on Geoscience and Remote Sensing
Anker P
(2021)
The BEAMISH hot water drill system and its use on the Rutford Ice Stream, Antarctica
in Annals of Glaciology
Arenad-Pingarron A
(2018)
Refraction angle calculation in multi-layered ice for wide-beam airborne radar
| Title | "Icefloor" - artistic ice core display |
| Description | Collaboration with artist Wayne Binitie and Arup architects.Artistic display of ice core sections, sounds of ice melting, slow changes to the display (over months) as ice melts and merges with surroundings. Exhibition open to the public for ~3 months at Arup offices in London https://www.arup.com/news-and-events/ice-floor https://www.youtube.com/watch?v=W4dAz_x4M1o |
| Type Of Art | Artistic/Creative Exhibition |
| Year Produced | 2019 |
| Impact | Engagement with artistic community and architecture community. Wide public visibility (estimated visitor numbers >1000) |
| URL | https://www.arup.com/news-and-events/ice-floor |
| Title | "Song of the Ice" - new music, video and imagery. |
| Description | Musician Steve Garrett - composition of music video and imagery inspired by Antarctic science an incorporating sounds and science from research projects. "Song of the Ice" - Music and science brought together in a collaborative project to mark Earth Day 2020. New music, accompanied by video and imagery, in three parts reflecting the life of the ice sheet. Opening public performance scheduled for Earth Day 2020, AURORA Centre Cambridge. |
| Type Of Art | Composition/Score |
| Year Produced | 2020 |
| Impact | Opening public performance scheduled for Earth Day 2020, AURORA Centre Cambridge. |
| URL | https://www.stevegarrettguitar.com/song-of-the-ice |
| Title | Ice core display, Science Museum |
| Description | Permanent display of an Antarctic ice core in a freezer display cabinet in the Atmosphere's gallery in the Science Museum, London. Several sections of ice are displayed in a column to show the incorporation of air (and greenhouse gases) into a deep ice core. The oldest section dates back about 800 years. The ice core is still on display in 2018. |
| Type Of Art | Artefact (including digital) |
| Year Produced | 2012 |
| Impact | Many tens of thousands of visitors have seen the ice core, and been able to see for themselves the trapped air from the past, and understand how scientists have been able to measure our past atmosphere. |
| URL | https://www.sciencemuseum.org.uk/see-and-do/atmosphere |
| Title | Museum of Water |
| Description | Museum of Water is an invitation to ponder our precious liquid and how we use it. NERC/BAS loaned an ice core and a display freezer for the first exhibition, and several vials of water from glacial and Holocene snowfall from Antarctica for the first and all subsequent exhibitions. Begun in a time of relative plenty in Britain, the Museum is travelling across the world gathering collections of water for future generations to consider. Museum of Water has travelled to over 50 different sites worldwide, been visited by over 60,000 people, and currently holds over 1,000 bottles in the collection. These range from a melted snowman to a burst London water main and water from the last ice age, a muddy puddle in Birmingham to a canal in Rotterdam, water from Lourdes, Mecca and the Ganges, condensation from a Falmouth window, Ghost water and bad dream water, 20-year-old evaporated snow from Maine, a new born baby's bath water, Norwegian spit, three types of urine, two different breaths and water from a bedside table said to be infused with dreams. |
| Type Of Art | Artefact (including digital) |
| Year Produced | 2014 |
| Impact | Several thousand visitors to the initial exhibition in London in 2014. Subsequent exhibitions since then attracted many thousand further visitors. |
| URL | http://www.museumofwater.co.uk/ |
| Title | Polar Zero |
| Description | BAS collaboration with artist Wayne Binitie (Royal Collage of Arts) and Arup architects. The exhibition features an original glass sculpture encasing Antarctic air from the year 1765 (the date that scientists say predates the Industrial Revolution) and an Antarctic ice core containing trapped air bubbles that reveal a unique record of our past climate. |
| Type Of Art | Artistic/Creative Exhibition |
| Year Produced | 2021 |
| Impact | Highly-acclaimed and influential exhibition at COP26 UN Climate Change Conference, Glasgow 2021. Significant engagement from politicians, policy-makers, funders and commercial interests, both national and international. Wide visibility (estimated visitor numbers >1000) |
| URL | https://www.arup.com/news-and-events/art-science-and-the-race-to-zero |
| Title | Royal School of Arts |
| Description | Artwork based on recordings of deep Antarctic ice cores releasing pre-industrial air back into the ambient air. Using a technique known as xxxx, sounds recorded from the release of trapped air in ice cores is projected into molten glass as it solidifies into the artwork. Artwork displayed at several venues in 2017, including a notable installation in main courtyard of V&A Museum, London. Several thousand visitors attended. |
| Type Of Art | Artwork |
| Year Produced | 2017 |
| Impact | NERC's vision is 'To place environmental science at the heart of responsible management of our planet'. This involves winning hearts and minds. Science-led activities often aim at the 'mind' (left brain hemisphere) and find it difficult to reach the 'heart' (right brain hemisphere); lasting change in society and economy needs to involve both. Engaging artistic professions directly with environmental scientists has great potential to result in research outputs that reach both brain hemispheres and provide meaningful engagement of NERC science with new audiences, both amongst decision makers and the general public. An additional benefit of such an art-science interaction for NERC scientists is the inspiration to view their work from different angles and increase innovation and creativity in their own scientific practice. |
| URL | https://www.bas.ac.uk/project/data-as-art/data-as-art-sonic-form-and-surface-in-glass/ |
| Title | The Song of The Ice, Event, Cambridge 2022 |
| Description | Public presentation of Song of the Ice in Cambridge. Event also included three related talks from scientists involved in the project talking about the science behind it and their personal reflections on being involved. Intention was to reach a combination of British Antarctic Survey staff, Cambridge University staff and students (including Scott Polar Research Institute) and the local general public. |
| Type Of Art | Performance (Music, Dance, Drama, etc) |
| Year Produced | 2022 |
| Impact | One significant outcome was the invitation for the artist involved to repeat the event at the subsequent UK Antarctic Science and the International Glaciological Society meetings in Edinburgh |
| URL | https://stevegarrettguitar.com/the-song-of-the-ice |
| Title | The Song of the Ice |
| Description | Music and video public premiere, presentation launched on Earth Day, 22 April 2020. Launched by live stream video on YouTube (https://www.youtube.com/watch?v=8r3xdrp5GGI) Was to have been a live performance in Cambridge, changed to an online event due to covid lockdown Includes sounds of icequakes generated as the ice moves and flows Includes record of atmospheric CO2 over the last ~1Ma, converted to sound and music |
| Type Of Art | Performance (Music, Dance, Drama, etc) |
| Year Produced | 2020 |
| Impact | Widely acclaimed in the field. Led to a number of other events and outputs |
| URL | https://stevegarrettguitar.bandcamp.com/album/the-song-of-the-ice |
| Title | The Song of the Ice, Performance, Edinburgh 2022 |
| Description | Public presentation of The Song of the Ice at University of Edinburgh Centre for Carbon Innovation (ECCI). Primary audience (>100) was attendees of both the UK Antarctic Science Conference and the International Glaciological Society, British Branch Meeting. |
| Type Of Art | Performance (Music, Dance, Drama, etc) |
| Year Produced | 2022 |
| Impact | Subsequent further interest from academics interested in using the audio material to help with public awareness and appreciation of environmental research |
| URL | https://stevegarrettguitar.com/the-song-of-the-ice |
| Description | Ice shelf and ice stream research Research into the dynamics of the northern Peninsula ice shelves are looking at the changes in glaciers after the breakup of Larsen B ice shelf in 2002. Glaciers responded almost immediately to the breakup, with increased velocities which, although variable, continue to date. The remaining ice shelf in Scar Inlet is not expected to survive much longer. Further we have shown that the thinning of the Larsen C ice shelf is due to melting from both above and below (rather than just one or the other). We have modelled the influence of sub-glacial hydrology on the presence and scale of ice streams. For some ice streams, the mechanism leading to their formation is obvious: large variations in bedrock topography cause ice to be channelized into bedrock troughs; thicker ice then leads to larger shear stresses and hence faster flow. However in other cases, topography does not appear to be the main control on size and location of the ice streams, and it has been supposed that such large variation in ice velocities may be a consequence of the subglacial hydrologic system. Modelling the instantaneous response of glaciers after the collapse of the Larsen B Ice Shelf has produced the first area-wide numerical analysis of glacier dynamics before and immediately after the collapse of the ice shelf. The culmination of many strands of work has resulted in a significant milestone in our ability to make predictions of future ice sheet behaviour that are realistic. This is a comprehensive and thorough study that pulls together theory, modelling and data; it's unlikely to be something that the public will get excited about, but scientifically it is a significant achievement which gives us the ability to move on to the next stage - believable predictions of future ice sheet behaviour. Using sophisticated statistical methods, we are developing probabilistic methods to quantify the risks associated with forecasting ice losses from Antarctica and Greenland and consequent sea-level rise. We have used passive seismic methods to study "micro-earthquakes" from the base of a glacier to interpret the mechanisms of ice flow over its bed. Palaeoclimate research We have been working with Dr Nerilie Abram from the Australian National University on the chemistry of the James Ross Island core. Funded by a grant from the Australian Research Council, we are working with climate records from speleothems, ice cores and corals to reconstructing tropical and Antarctic climate variability over the last millennium and understand the impact on southern Australian rainfall. We contributed data from the Greenland NEEM ice core to a paper in Nature that used volcanic sulphate records from Antarctica and Greenland together with tree-ring climate data, and archaeological records of crop failures and famine, to show the of human and climate consequences of large volcanic eruptions over the past 2500 years. As well as the well-known events such as Tambora and the 'year without a summer' in Europe, better dating of the records showed a period of 10 years around 536 AD where significant crop failures led to stresses in civilisations which are now shown to be due to due to the response of the climate to two large volcanic eruptions a few years apart. IDP has published its latest estimate of ice accumulation history from ice cores taken in the south west of the Peninsula. Accumulation increased markedly during the 20th century, with the biggest increase seen in the past thirty years. Preliminary results from a deep ice core penetrating to bedrock on the Fletcher Promontory to the south west of Ronne Ice Shelf has cast an intriguing light on the possible collapse of the West Antarctic Ice Sheet in the Last Interglacial period, suggesting that ice remained at this site, and the Ronne Ice Shelf was possibly not significantly reduced in extent. Research in the field We joined a project led by Howard Conway (University of Seattle) on the Crary Ice Rise to use the BAS pRES (phase sensitive radar) system to understand the dynamics of an ice rise stranded between rapidly moving West Antarctic Ice Sheet ice streams. We have developed, and tested in the field, a technique for rapidly drilling with an auger to recover ice chips for palaeoclimate research, and opening a borehole for further geophysical measurements in the ice sheet. The RAID (Rapid Access Isotope Drill) system is designed to drill and recover ice chips to a depth of around 600 m in around 10 days, using a team of two, and a minimal amount of equipment (the whole system plus generator and fuel weighs less than 1000 kg). This contrasts to conventional ice core drilling system that require a team of six and around 70 days with 15 tons of equipment to reach the same depth. The system is designed to allow rapid reconnaissance of potential ice core drilling sites before conventional drilling equipment is deployed. The system will be used to test potential sites for a forthcoming major European project to recover the oldest ice core record from Antarctica. In collaboration with colleagues from Italy and France, we have deployed the RAID drill system at a candidate drilling site near Dome C in East Antarctica that we believe may have the potential to reveal the evolution of the climate and the atmosphere over the past 1.5 Million years. This is a period when the Earth's glacial/interglacial climate rhythm changed from a pacing of 41,000 years to a pacing of 100,000 years between successive warm periods. The drilling was designed to test candidate sites, and was backed up with extensive over-snow radar to image the bed of the ice sheet, and internal horizons in the ice sheet, using the BAS radar systems Ice shelf fracture and stability. The UK's Halley Research Station was first established on the Brunt Ice Shelf in 1956 and until recently had been occupied continuously ever since. However, a sequence of new progressive fracturing events in the ice shelf prompted, first the relocation of the station to a more-secure site, then the decision not to occupy the station over winter 2017 on safety grounds. For many years, our glaciologists have been monitoring and studying the Brunt Ice Shelf, and this has intensified with the recent increased ice fracturing and consequent concerns for the station. Combining these observations with numerical ice dynamics models shows a numbers of things. The thickness and flow speed as the inland ice crosses the grounding line to form the ice shelf is a key factor that leads to the highly-heterogeneous ice shelf structure that then develops, and controls the rate at which fractures propagate horizontally across the shelf. The modelling suggests that changes in the speed of the ice shelf are particularly influenced by the degree of pinning at McDonald Ice Rumples, the only grounded point in the ice shelf, and the re-activation of rifts. It also suggests that, even if the ice shelf does not fracture completely, it can take a number of decades for buttressing to re-establish itself at the rumples and for the ice speed to return to pre-fracture levels. |
| Exploitation Route | Stability of the ice streams and shelves in the Antarctic Peninsula are critical to our understanding of potential changes to the ice sheet in a warming climate, and will be of interest to other glaciologists and climatologists, and to policy makers (via IPCC). The rapid access drilling technique has been used to test candidate sites for a potential EU large grant funded project to recover an ice core climate and atmosphere history of the past 1.5 million years. The continued monitoring and modelling of the Brunt Ice Shelf by glaciologists is feeding directly into the real-time operational decisions concerning activities and occupancy at the UK's Halley VI Research Station. Currently (early 2019), the observations indicate that the glaciological conditions on the Brunt Ice Shelf remain unpredictable. |
| Sectors | Education Environment Government Democracy and Justice |
| Description | Briefings on climate change and greenhouse gases |
| Geographic Reach | Multiple continents/international |
| Policy Influence Type | Contribution to a national consultation/review |
| Description | IPCC Lead author (Dr Hamish Pritchard) |
| Geographic Reach | Multiple continents/international |
| Policy Influence Type | Participation in a guidance/advisory committee |
| Description | Diatoms in ice cores, a key record to confirm the potential collapse of the West Antarctic Ice Sheet (WAIS) during the Last Interglacial period (LIG) |
| Amount | £78,613 (GBP) |
| Organisation | Natural Environment Research Council |
| Sector | Public |
| Country | United Kingdom |
| Start | 07/2021 |
| End | 03/2022 |
| Description | High-resolution subglacial landscape research |
| Amount | £61,900 (GBP) |
| Organisation | Natural Environment Research Council |
| Sector | Public |
| Country | United Kingdom |
| Start | 09/2021 |
| End | 03/2022 |
| Description | How did we enter the Anthropocene? |
| Amount | £71,700 (GBP) |
| Organisation | Natural Environment Research Council |
| Sector | Public |
| Country | United Kingdom |
| Start | 08/2021 |
| End | 03/2022 |
| Description | International Thwaites Glacier Collaboration - exceptional additional funding |
| Amount | £40,000 (GBP) |
| Funding ID | NE/S006672/1 |
| Organisation | Natural Environment Research Council |
| Sector | Public |
| Country | United Kingdom |
| Start | 03/2023 |
| End | 03/2025 |
| Title | 3D density and susceptibility distribution of the Wilkes Subglacial Basin and Transantarctic Mountains in East Antarctica. |
| Description | We present a 3D crustal model of density and susceptibility distribution in the Wilkes Subglacial Basin and the Transantarctic Mountains (TAM) based on joint inversion of airborne gravity and magnetic data. The applied 'variation of information' technique enforces a coupling between gravity and magnetic sources to give an enhanced inversion result. Our model reveals a large-scale body located in the interior of the Wilkes Subglacial Basin interpreted as a batholithic intrusive structure, as well as a linear dense body at the margin of the Terre Adelie Craton. We provide six netCDF files, which include the input gravity and magnetic data, the inverted gravity and magnetic data, and inverted crustal density and susceptibility distribution. Additionally, a simple jupyter notebook that loads and plots the provided data can be found here: https://doi.org/10.5281/zenodo.8304170 Funding for this research was provided by NERC through a SENSE CDT studentship (NE/T00939X/1) |
| Type Of Material | Database/Collection of data |
| Year Produced | 2023 |
| Provided To Others? | Yes |
| Impact | Not applicable. |
| URL | https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01765 |
| Title | 3D shear wave (Vsv) velocity model of West Antarctic crustal structure |
| Description | 3D vertically-polarised shear wave (Vsv) velocity model of West Antarctic crustal structure developed using data from the 2016-2018 UK Antarctic Seismic Network (UKANET) and Polar Earth Observing Seismic Network (POLENET). Interstation Rayleigh and Love wave phase velocity dispersion measurements at periods of 8-25 seconds were extracted from seismic ambient noise cross-correlograms by automated frequency-time analysis (AFTAN). The ensemble of interstation Rayleigh wave dispersion measurements was used to develop 2D Rayleigh wave phase velocity maps of West Antarctica at periods of 8-25 seconds by Fast Marching Surface Tomography (FMST) on a grid with a node spacing of 0.75deg. 'Local' 1D Rayleigh wave phase velocity dispersion curves were extracted by sampling the 2D Rayleigh wave phase velocity maps at grid node locations. The local 1D Rayleigh wave phase velocity dispersion curves were inverted for 1D shear wave (Vsv) structure to 40 km depth, and the ensemble of 1D shear wave (Vsv) profiles were subsequently gridded to produce the 3D shear wave (Vsv) model of West Antarctica from 10-40 km depth. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2019 |
| Provided To Others? | Yes |
| Impact | N/A |
| Title | 3D shear wave (Vsv) velocity model of West Antarctic uppermost mantle structure to 200 km depth |
| Description | 3D vertically-polarised shear wave (Vsv) velocity model of West Antarctic uppermost mantle structure to 200 km depth developed using data from the 2016-2018 UK Antarctic Seismic Network (UKANET) and Polar Earth Observing Seismic Network (POLENET). The model was constructed from the combination of fundamental mode Rayleigh wave phase velocity maps developed by ambient noise (periods 8-25 seconds) and earthquake data two-plane wave analysis (periods 20-143 seconds). Composite ''local' 1D Rayleigh wave phase velocity dispersion curves (periods 8-143 s) were extracted by sampling the 2D Rayleigh wave phase velocity maps at grid node locations spanning West Antarctica spaced at 100 km. The local 1D Rayleigh wave phase velocity dispersion curves were inverted for 1D shear wave (Vsv) structure to 200 km depth, and the ensemble of 1D shear wave (Vsv) profiles were subsequently gridded to produce the 3D shear wave (Vsv) model of West Antarctica uppermost mantle structure to 200 km depth. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2019 |
| Provided To Others? | Yes |
| Impact | N/A |
| Title | Age scales for the Palmer, Jurassic, and Rendezvous Antarctic Peninsula Ice Cores |
| Description | We present the age scales for three Antarctic Peninsula (AP) ice cores: Palmer, Rendezvous, and Jurassic. The three age scales are all from intermediate-depth cores, in the 133-141 m depth range. The Palmer age scale covers 390 years, 1621-2011 C.E., and is from one of the oldest AP cores. Rendezvous and Jurassic are from lower elevation high-snow accumulation sites and therefore cover shorter intervals, 1843-2011 C.E. and 1874-2011 C.E., respectively. The Palmer, Rendezvous, and Jurassic cores were all drilled in November-December 2012 using the British Antarctic Survey (BAS) electromechanical dry drill (without drill fluid). Water isotopes and the chemical species used to establish the age scales were measured in the ice core labs at BAS (Cambridge, UK) using Continuous Flow Analysis (CFA) or from melted discrete cut ice samples. The annual-layer markers for dating of the cores were primarily determined using nssSO4 and H2O2 summer peaks, with d18O and MSA as additional support. This research effort was carried out by the BAS Ice Core group and the established age scales will provide the foundation for multiple upcoming projects. The ice core drilling and analysis was funded by the British Antarctic Survey, Natural Environment Research Council (NERC, Cambridge, UK), part of UK research and innovation and NERC grant [NE/J020710/1]. Palmer analysis was funded by Haus der Kulturen der Welt (HKW, Berlin, Germany), in collaboration with the Anthropocene working group (AWG). |
| Type Of Material | Database/Collection of data |
| Year Produced | 2022 |
| Provided To Others? | Yes |
| Impact | N/A |
| URL | https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01608 |
| Title | Airborne radar bed elevation along flow lines covering the Evans, and Rutford Ice Streams, and ice rises in the Ronne Ice Shelf (2006/07) |
| Description | An airborne radar survey was flown as part of the GRADES-IMAGE project funded by BAS over the Evans Ice stream/Carson Inlet region mainly to image englacial layers and bedrock topography during the 2006/07 field season. Aeromagnetic data were also opportunistically collected. We present here the bed elevation picks from airborne radar depth sounding collected using the BAS PASIN radar depth sounding system. Data are provided as XYZ ASCII line data. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2020 |
| Provided To Others? | Yes |
| Impact | Not applicable. |
| URL | https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01349 |
| Title | Airborne radio-echo sounding of the English Coast, western Palmer Land, Antarctic Peninsula (2016/17 season) |
| Description | This dataset includes ~3,000 line km of radio-echo sounding data along the English Coast of western Palmer Land in the Antarctic Peninsula. Data was acquired by the British Antarctic Survey Polarimetric-radar Airborne Science Instrument (PASIN2) ice sounding radar system in the austral summer of 2016/2017. Radar lines collected at ~3-5 km line spacing transect a number of outlet glacier flows, close to the grounding line, where continental ice begins to float. Data were funded by a BAS National Capability grant. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2020 |
| Provided To Others? | Yes |
| Impact | Not applicable. |
| URL | https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01339 |
| Title | Airborne synthetic aperture radar ice-sounding depth profiles from Recovery Ice Stream 2016/17, and calibration data from Rothera 2016/17 and 2019/20 |
| Description | This data set corresponds to the processing of data acquired by the British Antarctic Survey (BAS) airborne Synthetic Aperture Radar (SAR) PASIN2 (Polarimetric Airborne Scientific INstrument, mark 2), designed for deep ice sounding and basal 3D-mapping. The dataset includes the processed calibration data collected over the sea surface near Rothera Research Station during the Antarctic Summers campaigns in 2016/17 FISS (Filchner Ice Shelf System) and 2019/20 BEAMISH (Bed Access, Monitoring and Ice Sheet History) projects, and the processed SAR images as depth profiles in the Recovery Ice Stream near its grounding line, in 2016/17 (FISS). With multiple antennas for transmission and reception at 150-MHz central frequency, and an across-track physical array, PASIN2 resolves the ambiguities for distinguishing between scatterers from port and starboard directions. After processing several 2D SAR images (range and along-track dimensions) with transmitter-receiver pairs, the directional ambiguities are resolved, obtaining the across-track Direction of Arrival (DoA, elevation angle) estimation. Finally, from the 3D geometry of range, along-track and across-track angle, the real depths and across-track distances are estimated, regarding the case of the incorrectly assumed vertical DoA of a single SAR image. The calibration flights assessed and validated the instrument antenna patterns and processing performances. In this dataset, only the simulated and measured antenna patterns, and SAR and DoA images are included. By resolving directional ambiguities and accounting for reflector across-track location, the true ice thickness and bed elevation are obtained, thereby removing the error of the usual assumption of vertical DoA, that greatly influence the output of flow models of ice dynamics. This work was supported by NERC grant reference NE/L013444/1. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2023 |
| Provided To Others? | Yes |
| Impact | Not applicable |
| URL | https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01708 |
| Title | BEDMAP2 - Ice thickness, bed and surface elevation for Antarctica - gridding products |
| Description | We present here Bedmap2 (2013), a suite of gridded products describing surface elevation, ice-thickness and the sea floor and subglacial bed elevation of the Antarctic south of 60deg S. We derived these products using data from a variety of sources, including many substantial surveys completed since the original Bedmap compilation (Bedmap1) in 2001. In particular, the Bedmap2 ice thickness grid is made from 25 million measurements, over two orders of magnitude more than were used in Bedmap1. In most parts of Antarctica the subglacial landscape is visible in much greater detail than was previously available and the improved data coverage has in many areas revealed the full scale of mountain ranges, valleys, basins and troughs, only fragments of which were previously indicated in local surveys. The derived statistics for Bedmap2 show that the volume of ice contained in the Antarctic ice sheet (27 million km3) and its potential contribution to sea-level rise (58 m) are similar to those of Bedmap1, but the mean thickness of the ice sheet is 4.6 % greater, the mean depth of the bed beneath the grounded ice sheet is 72 m lower and the area of ice sheet grounded on bed below sea level is increased by 10 %. The Bedmap2 compilation highlights several areas beneath the ice sheet where the bed elevation is substantially lower than the deepest bed indicated by Bedmap1. These products, along with grids of data coverage and uncertainty, provide new opportunities for detailed modelling of the past and future evolution of the Antarctic ice sheets. The compilation of Bedmap2 products was undertaken within the British Antarctic Survey's programme, Polar Science for Planet Earth. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2022 |
| Provided To Others? | Yes |
| Impact | Not applicable |
| URL | https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01617 |
| Title | BEDMAP2 - Ice thickness, bed and surface elevation for Antarctica - standardised data points |
| Description | We present here the Bedmap2 ice thickness, bed and surface elevation standardised CSV data points that were used to create the Bedmap2 gridding products. The data consists of 25 million points coming from 68 individual surveys acquired in Antarctica. The associated datasets consist of: - Bedmap1 standardised CSV data points: https://doi.org/10.5285/f64815ec-4077-4432-9f55-0ce230f46029 - Bedmap3 standardised CSV data points: https://doi.org/10.5285/91523ff9-d621-46b3-87f7-ffb6efcd1847 - Bedmap2 statistically-summarised data points (shapefiles): https://doi.org/10.5285/0f90d926-99ce-43c9-b536-0c7791d1728b - Bedmap2 gridding products: https://doi.org/10.5285/fa5d606c-dc95-47ee-9016-7a82e446f2f2 This work is supported by the SCAR Bedmap project and the British Antarctic Survey's core programme: National Capability - Polar Expertise Supporting UK Research |
| Type Of Material | Database/Collection of data |
| Year Produced | 2022 |
| Provided To Others? | Yes |
| Impact | Not applicable |
| URL | https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01616 |
| Title | BEDMAP2 - Ice thickness, bed and surface elevation for Antarctica - standardised shapefiles and geopackages |
| Description | We present here the Bedmap2 ice thickness, bed and surface elevation aggregated points and survey lines. The aggregated points consist of statistically-summarised shapefile points (centred on a continent-wide 500 m x 500 m grid) that reports the average values of ice thickness, bed and surface elevation from the full-resolution survey data and information on their distribution. The points presented here correspond to the additional points to Bedmap1 used for the gridding of Bedmap2. The data comes from 14 different data providers and 75 individual surveys. They are available as geopackages and shapefiles. The associated datasets consist of: - Bedmap1 statistically-summarised data points (shapefiles): https://doi.org/10.5285/925ac4ec-2a9d-461a-bfaa-6314eb0888c8 - Bedmap3 statistically-summarised data points (shapefiles): https://doi.org/10.5285/a72a50c6-a829-4e12-9f9a-5a683a1acc4a - Bedmap2 standardised CSV data points: https://doi.org/10.5285/2fd95199-365e-4da1-ae26-3b6d48b3e6ac - Bedmap2 gridding products: https://doi.org/10.5285/fa5d606c-dc95-47ee-9016-7a82e446f2f2 This work is supported by the SCAR Bedmap project and the British Antarctic Survey's core programme: National Capability - Polar Expertise Supporting UK Research |
| Type Of Material | Database/Collection of data |
| Year Produced | 2022 |
| Provided To Others? | Yes |
| Impact | Not applicable |
| URL | https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01618 |
| Title | BEDMAP3 - Ice thickness, bed and surface elevation for Antarctica - standardised data points |
| Description | We present here the Bedmap3 ice thickness, bed and surface elevation standardised CSV data points that are used to create the Bedmap3 gridding products in addition to the previous data releases. The data consists of 50 million points acquired by 17 different data providers in Antarctica. The associated datasets consist of: - Bedmap1 standardised CSV data points: https://doi.org/10.5285/f64815ec-4077-4432-9f55-0ce230f46029 - Bedmap2 standardised CSV data points: https://doi.org/10.5285/2fd95199-365e-4da1-ae26-3b6d48b3e6ac - Bedmap3 statistically-summarised data points (shapefiles): https://doi.org/10.5285/a72a50c6-a829-4e12-9f9a-5a683a1acc4a This work is supported by the SCAR Bedmap project and the British Antarctic Survey's core programme: National Capability - Polar Expertise Supporting UK Research |
| Type Of Material | Database/Collection of data |
| Year Produced | 2022 |
| Provided To Others? | Yes |
| Impact | Not applicable |
| URL | https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01614 |
| Title | BEDMAP3 - Ice thickness, bed and surface elevation for Antarctica - standardised shapefiles and geopackages |
| Description | We present here the Bedmap3 ice thickness, bed and surface elevation aggregated points and survey lines. The aggregated points consist of statistically-summarised shapefile points (centred on a continent-wide 500 m x 500 m grid) that reports the average values of Antarctic ice thickness, bed and surface elevation from the full-resolution survey data and information on their distribution. The points presented here correspond to the added points since the last release of Bedmap2. The data comes from 14 different data providers and 75 individual surveys. They are available as geopackages and shapefiles. The associated datasets consist of: - Bedmap1 statistically-summarised data points (shapefiles): https://doi.org/10.5285/925ac4ec-2a9d-461a-bfaa-6314eb0888c8 - Bedmap2 statistically-summarised data points (shapefiles): https://doi.org/10.5285/0f90d926-99ce-43c9-b536-0c7791d1728b - Bedmap3 standardised CSV data points: https://doi.org/10.5285/91523ff9-d621-46b3-87f7-ffb6efcd1847 This work is supported by the SCAR Bedmap project and the British Antarctic Survey's core programme: National Capability - Polar Expertise Supporting UK Research |
| Type Of Material | Database/Collection of data |
| Year Produced | 2022 |
| Provided To Others? | Yes |
| Impact | Not applicable |
| URL | https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01502 |
| Title | Borehole thermometry data from Rutford Ice Stream, West Antarctica, 2007 |
| Description | Borehole temperature measurements from the upper 300 m of Rutford Ice Stream. A string of thermistors was installed into a hot-water drilled hole in February 2005. The string comprised 10 calibrated thermistors at approximately 30 m spacing. The temperature measurements provided were taken in February 2007, following ample time for the heat from the drilling process to have dissipated. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2020 |
| Provided To Others? | Yes |
| Impact | Not applicable. |
| URL | https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01340 |
| Title | CLIVASH2k Antarctic ice core chemistry database |
| Description | This data compilation is a collaborative effort by the CLIVASH2k (Climate Variability in Antarctica and the Southern Hemisphere over the past 2000 years) working group, part of the PAGES2k network. The database is a compilation of sodium and sulphate records from Antarctic ice cores spanning the past 2000 years, and contains a combination of published records (sourced from public archives), and unpublished data submitted to the CLIVASH2k call. All data are provided as annual averages (Jan-Dec). This database includes the annually resolved section of each original dataset (in the annual_resolution folder) and the coarser than annual sections (in the coarse_resolution folder). Annual averages for the oldest and most recent years were only included if the available data covered more than half of the year. All concentration values are presented in parts per billion (ppb). All flux values are presented in ppb by kilogram per square meter (ppb kg m-2). Data for each species are contained in separate CSV files; Sodium concentration (Na_concentration), Sodium flux (Na_flux), Sulphate concentration (SO4_concentration), Sulphate flux (SO4_flux), Excess Sulphate (xsSO4), Excess Sulphate flux (xsSO4_flux). Each file contains the data for all sites. The Excess Sulphate and Excess Sulphate flux calculations assume that all Na comes from the ocean (according to the standard seawater ion ratio as in [Holland, 1978]). Data were submitted in both the ionic (e.g. SO42-) and elemental forms (S). Elemental S has been converted to sulphate (SO42-) by multiplying by three. A data description publication accompanies this database: Thomas et al., (to be submitted) The CLIVASH2k ice core chemistry database: an Antarctic compilation of sodium and sulphate records spanning the past 2000 years. Earth System Science Data. This database was created with the support of the CLIVASH2k project. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2022 |
| Provided To Others? | Yes |
| Impact | Not applicable |
| URL | https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01670 |
| Title | Downhole distributed acoustic seismic profiles at SkyTrain Ice Rise, West Antarctica, January 2020 |
| Description | A distributed acoustic sensing (DAS) experiment was undertaken at SkyTrain Ice Rise in the Weddell Sea Sector of West Antarctica. The aim was to evaluate the use of DAS technology using existing infrastructure and for delineating the englacial fabric to improve our understanding of ice sheet history in the region. Three walkaway profiles were acquired at 45 degree intervals using a hammer and plate source. Both direct and reflected P- and S-wave energy, as well as surface wave energy, are observed using a range of source offsets recorded using fibre optic cable. Significant noise results from the cable hanging untethered in the borehole. At greater depth, where drilling fluid is present, signal strength is sufficient to measure seismic interval velocities and attenuation. Fieldwork was part of the BEAMISH Project (NERC AFI award numbers NE/G014159/1 and NE/G013187/1). John Michael Kendall was supported by additional funding from NERC award No. CASS-166. The Skytrain borehole and fibre optic cable are part of the University of Cambridge WACSWAIN Project (EU Horizon 2020 agreement No. 742224). |
| Type Of Material | Database/Collection of data |
| Year Produced | 2021 |
| Provided To Others? | Yes |
| Impact | Not applicable. |
| URL | https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01458 |
| Title | Fields and parameters related to the flow of ice in the Antarctic Ice Sheet recovered using inverse methods and satellite data |
| Description | We can learn about the flow of ice in Antarctica by evaluating the key parameters that control the flow speed. These parameters include the basal drag coefficient and the ice viscosity. They can be estimated by adjusting their values so that model velocities at the upper surface agree with satellite observations. This dataset was produced using inverse methods to obtain the parameter values. In this approach a cost function that describes the mismatch between model and satellite data is minimised iteratively by making small adjustments to the parameters at each iteration to improve the fit. The result is better information about the flow field in the Antarctic ice sheet. Once the flow field is available it can be used as an initial state from which begin temporally evolving simulations using the model. A number of different examples are included to show how varying different parameters alters the temporally evolving simulations. The contributing datasets used to constrain the model are listed by Arthern et al (2015) and Arthern and Williams (2017). Multidecadal model simulations span up to 100 years of simulation time. This work was funded by NERC standard grant NE/L005212/1. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2022 |
| Provided To Others? | Yes |
| Impact | Not applicable |
| URL | https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01632 |
| Title | Fossil diatom and geochemistry data from a 700-year core from La Grange Cop, subantarctic Marion Island. |
| Description | This dataset contains geochemistry measurements and fossil diatom counts made on a sediment core from La Grange Cop lake, Marion Island (46deg94S, 37deg60E, 60 m above sea level). The dataset consists of diatom relative frequencies, diatom principal components analysis (PCA), and diatom-inferred conductivity, ITRAX scanning XRF elemental percentages and XRF PCA, C%, N%, and delta13C measurements, and magnetic susceptibility measurements. Ages of the sediment samples were assigned based on an age depth model derived from 210Pb, 137Cs, and 14C measurements and span the last c. 700 years. This project was funded by UK Natural Environment Research Council Grant NE/K004514/1 to Dominic A Hodgson and a Research Foundation-Flanders travel bursary to Elie Verleyen. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2020 |
| Provided To Others? | Yes |
| Impact | Not applicable. |
| URL | https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01363 |
| Title | Four approaches leading to the age scale of the Young Island ice core |
| Description | Young Island is a new ice core drilling site uniquely positioned to give insight into the (sub-)Antarctic climate. This dataset contains four preliminary dating approaches that lay the foundation for the age scale of the Young Island ice core presented in Moser et al. (2021). Funding was provided to SubICE by Ecole Polytechnique Federale de Lausanne, the Swiss Polar Institute, and Ferring Pharmaceuticals Inc (grant no. SubICE). ERT received core funding from NERC to the British Antarctic Survey's Ice Dynamics and Palaeoclimate programme. DEM was supported by BAS, Cambridge, and the NERC C-CLEAR doctoral training programme (grant no. NE/S007164/1). JBP received grant funding from the Australian Government. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2021 |
| Provided To Others? | Yes |
| Impact | Not applicable |
| URL | https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01586 |
| Title | GPS data from Brunt Ice Shelf close to the site of Halley VI Research Station from 2013 to August 2023 |
| Description | GPS data recorded from three sites close to the 2023 site of Halley VI Research Station. Data from site LL20 spans 2013 to 2017; Data from site ZZ6A spans 2017 to 2023; Data from site ZMET spans 2022 to 2023. The data are presented as RINEX observation files. The data were collected as part of the Lifetime-of-Halley monitoring programme. This work was funded by NERC grant NE/X014991/1 (RIFT-TIP) and supported by NERC Antarctic Logistics and Infrastructure. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2023 |
| Provided To Others? | Yes |
| Impact | Not applicable. |
| URL | https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01771 |
| Title | Global monthly outputs of orography, surface air temperature and water stable isotopes for the last interglacial for idealised Antarctic Ice Sheet simulations run by the isotope-enabled HadCM3 |
| Description | Global monthly outputs of orography, surface air temperature and water stable isotopes (d18O) were run by the isotope-enabled atmosphere/ocean coupled model HadCM3 for the last interglacial (128 ka). An ensemble of ten idealised Antarctic Ice Sheet (AIS) simulations were processed, included a pre-industrial and a last interglacial control simulations. The eight other simulations used changed topography of the AIS relative to Dome C to ensure the preservation of the atmospheric pathways. The simulations were run 100 years and the last 50 years were used for the analyses. This work was funding through the European Research Council under the Horizon 2020 research and innovation programme (grant agreement No 742224, WACSWAIN). |
| Type Of Material | Database/Collection of data |
| Year Produced | 2020 |
| Provided To Others? | Yes |
| Impact | Not applicable. |
| URL | https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01429 |
| Title | Ground penetrating radar common-midpoint gathers from Antarctica's Larsen C Ice Shelf, Nov 2017, following the calving of Iceberg A68 |
| Description | Ground penetrating radar (GPR) data were acquired at a site on Antarctica's Larsen C Ice Shelf, in November 2017. The acquisition was performed to measure radar anisotropy, a potential proxy for the stress condition in the upper ice shelf, following the calving of Iceberg A68 in July 2017. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2019 |
| Provided To Others? | Yes |
| Impact | N/A |
| Title | HadCM3 and HadGEM3 LIG model outputs: A sea ice-free Arctic |
| Description | The HadGEM3 (HadGEM3-GC3.1 or HadGEM3-GC3.1-N96ORCA1) PI simulation was initialized using the standard CMIP6 protocol using constant 1850 GHGs, ozone, solar, tropospheric aerosol, stratospheric volcanic aerosol and land-use forcing. The PI spin-up was 700 model-years, which allowed the land and oceanic masses to attain approximate steady state. The HadGEM3 LIG (Last Interglacial) simulation was initialized from the end of the spin-up phase of the equivalent pre-industrial (PI) simulation. After initialization, the LIG was run for 350 model-years. This 350 LIG spin-up permits the model to reach atmospheric equilibrium and to achieve an upper-ocean equilibrium. The model was then run for a further 200 model-years of LIG production run. This has been demonstrated to be an adequate run length to appropriately capture the model internal variability. This dataset contains outputs from the 200 years of production run of the period. The HadCM3 PI simulation was run for a period of over 600 years. The HadCM3 LIG simulation was initialized from the end of a previous CMIP5 LIG simulation, which was of length 400 years and initiated from the end of the corresponding PI, and run for further 250 years. The total spin-up phase for the HadCM3 LIG simulation used in this study was thus 600 model-years, and the length of the production (at atmospheric and upper-oceanic equilibrium) LIG HadCM3 simulation is 50 model-years. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2021 |
| Provided To Others? | Yes |
| Impact | N/A |
| URL | https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01591 |
| Title | Ice core chemistry, conductivity, and stable nitrate isotopic composition of the Samalas eruption in 1259 from the ISOL-ICE ice core, Dronning Maud Land, Antarctica |
| Description | This dataset contains a subset of the ice core data for the ISOL-ICE core recovered from Dronning Maud Land, Antarctica in January 2017 (https://doi.org/10.5285/9c972cfb-0ffa-4144-a943-da6eb82431d2). The subset reported here contains ice core data from the 1455 - 1227 AD period (60.80 - 79.45 m depth) and covers the volcanic eruption of Samalas, Indonesia in 1259. The ice core was dated by annual layer counting and identifying volcanic horizons as fixed time markers. Here we report i) the age-depth model over the 1455 - 1227 AD period, ii) high-resolution nitrate stable isotopic composition of discrete ice core samples, and iii) nitrate, sodium and magnesium mass concentrations and electrolytic meltwater conductivity from continuous flow analysis (CFA). |
| Type Of Material | Database/Collection of data |
| Year Produced | 2019 |
| Provided To Others? | Yes |
| Impact | N/A |
| Title | Ice core chemistry, density, conductivity, dust, snow accumulation rate, and stable nitrate isotopic composition of the 120 m ISOL-ICE ice core, Dronning Maud Land, Antarctica |
| Description | This dataset contains ice core data for the ISOL-ICE core recovered from Dronning Maud Land, Antarctica in January 2017. The core is 120 m in depth and spans a 1349 +/- 3 year period from 2017 to 668 AD. The core was dated by annual layer counting and identifying volcanic horizons as fixed time markers. High-resolution stable nitrate isotopic composition data is accompanied by chemistry data, conductivity, density, insoluble particle counts (dust), and snow accumulation rate data. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2019 |
| Provided To Others? | Yes |
| Impact | N/A |
| Title | Ice radar data from Little Dome C, Antarctica, 2016-2018 |
| Description | The dataset consists of 14 selected lines of radar data, collected from the Little Dome C region close to Concordia Station in East Antarctica. The data were collected in austral field seasons 2016-17, and 2017-18, from within the search region for the planned European project Beyond EPICA - Oldest Ice, an EU-funded 10-nation consortium project to drill an ice core that spans up to 1.5 million years of climate and atmospheric history. Radar lines were recorded using the BAS DELORES sledge-borne, over-snow, ice radar system and geolocated with a precise GPS system. This data was generated within the project Beyond EPICA - Oldest Ice (BE-OI). The project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No. 730258 (BE-OI CSA). It has received funding from the Swiss State Secretariat for Education, Research and Innovation (SERI) under contract number 16.0144. It is further supported by national partners and funding agencies in Belgium, Denmark, France, Germany, Italy, Norway, Sweden, Switzerland, the Netherlands and the UK. Logistic support is mainly provided by AWI, BAS, ENEA and IPEV. Collection of this data also benefited from support by the joint French-Italian Concordia Programme, which established and runs the permanent station Concordia at Dome C. We particularly acknowledge those who collected the data in the field, and assisted with the processing: Robert Mulvaney, Massimo Frezzotti, Marie Cavitte, Ed King, Carlos Martin, Catherine Ritz, Julius Rix. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2022 |
| Provided To Others? | Yes |
| Impact | Not applicable |
| URL | https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01623 |
| Title | Ice surface, ice base and lake bed elevation data from seismic data acquired over Subglacial Lake Ellsworth 2007-08 |
| Description | Point data measurements of ice surface, ice base and lake bed elevation are given from Subglacial Lake Ellsworth (SLE), West Antarctica. The data were acquired during the austral summer of 2007-2008. Five seismic reflection lines were acquired over SLE, with surface elevation determined by dual frequency GPS. Funding was provided by NERC AFI, award numbers NE/D009200/1, NE/D008638/1 and NE/D008751/1. Logistics support: British Antarctic Survey. Equipment support: NERC Geophysical Equipment Facility (loan numbers 838 and 870). |
| Type Of Material | Database/Collection of data |
| Year Produced | 2020 |
| Provided To Others? | Yes |
| Impact | Not applicable. |
| URL | https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01330 |
| Title | Ice-sounding airborne synthetic aperture radar depth profiles from Recovery Ice Stream 2016/17 and Rutford Ice Strem 2019/20 to test the RGB-Doppler-Decomposition method. |
| Description | This data set corresponds to data acquired by the British Antarctic Survey (BAS) airborne Synthetic Aperture Radar (SAR) PASIN2 (Polarimetric Airborne Scientific INstrument, mark 2), designed for deep ice sounding and basal 3d-mapping. The data set includes the processed SAR images as depth profiles in the Recovery Ice Stream and Rutford Ice Stream, respectively downstream and upstream of the grounding line, and respectively for the 2016/17 FISS (Filchner Ice Shelf System) and the 2019/20 BEAMISH (Bed Access, Monitoring and Ice Sheet History) projects, both during the Antarctic Summer. With multiple antennas for transmission and reception at 150-MHz central frequency, and an across-track physical array, PASIN2 resolves the ambiguities for distinguishing between scatterers from port and starboard directions; however, in the two SAR images of the current dataset the port/starboard ambiguities are not resolved. On this dataset the user will be able to apply the RGB Doppler Decomposition method in the Doppler domain, interpret the results, and modify the different parameters and colours to contrast the results, all with the outcome of conducting new decompositions according to other datasets and needs. The RGB Spectral Decomposition is a generalised framework to interpret the SAR images: first, the Doppler or range spectral domains are first split into three sub-bandwidths; next, to each of the three a colour of a triplet of colours is assigned; and finally the three are superposed into one single image by the addition of the three colours. If the decomposition is applied on the Doppler spectrum, the new image contains the directional information related to the Doppler frequencies: positive frequencies when the radar approaches the target, near zero frequencies when the relative distance from radar to target is near stationary, and negative when the radar leaves it behind. If the backscattering is characterised by a very broad beamwidth the target will be gray/white, and if by a very narrow beamwidth then the target will be represented by one of the colours of the triplet. This work has received funding from the NERC grant NE/L013444/1, project: Ice shelves in a warming world: Filchner Ice Shelf System (FISS), Antarctica. The 2016/17 data were collected as part of the NERC grant NE/L013770/1, project: Ice shelves in a warming world: Filchner Ice Shelf System (FISS), Antarctica. The 2019/20 data were collected as part of the BAS National Capability contribution to the NERC/NSF International Thwaites Glacier Collaboration (ITGC) program. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2023 |
| Provided To Others? | Yes |
| Impact | Not applicable. |
| URL | https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01766 |
| Title | In situ measurements of snow accumulation in the Amundsen Sea Embayment during 2016 |
| Description | This dataset contains measurements of snow accumulation over an 11-month period in 2016 at six sites in the Pine Island-Thwaites Glacier catchment of West Antarctica. The sites were visited on two occasions, the first in January 2016 and the second in December 2016. The accumulation rate at each site was calculated using an average density profile, based on a compilation of six low elevation sites on Pine Island Glacier (iSTAR sites 15-19, and 22; Morris et al., 2017) that are situated nearby. The average density for the top metre based on this compilation is 419 kg m-3. Further details are provided in the associated publication. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2018 |
| Provided To Others? | Yes |
| Impact | N/A |
| Title | Last Interglacial summer air temperature observations for the Arctic |
| Description | These 21 Last Interglacial (LIG) summer surface air temperature (SSAT) observations were compiled to assess LIG Arctic sea ice (Guarino et al 2020). Twenty of the observations were also previously used in the IPCC-AR5 report. Each observation is thought to be of summer LIG air temperature anomaly relative to present day and is located in the circum-Arctic region. All sites are from north of 51N. There are 7 terrestrial based temperature records; 8 lacustrine records; 2 marine pollen-based records; and 3 ice core records included in the original compilation. This compilation includes 1 additional ice core record. This work was funded by NERC standard research grant no. NE/P013279/1. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2021 |
| Provided To Others? | Yes |
| Impact | N/A |
| URL | https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01593 |
| Title | Microseismic icequake catalogue, Rutford Ice Stream (West Antarctica), November 2018 to February 2019 |
| Description | This dataset contains ASCII files with hypocenter information, event times and magnitudes for 227029 micro-earthquakes with a magnitude range from -2.0 to -0.3 recorded from a 35-station seismic network located ~40 km upstream of the grounding line of Rutford Ice Stream, West Antarctica. For 87910 of these events, earthquake focal mechanisms (strike/dip/rake) are available. The seismic network, which recordings are the base for the event catalogue, broadly formed a rectangle with 1 km station spacing. Details on the station locations, instrument types and operation periods are included in these data files. The event catalogue encloses the geographic region between 084.142 to 083.760 degrees West and 78.204 to 78.113 degrees South. Events are located between 1.553 and 2.416 km depth. Recording took place between 20th November 2018 and 16th February 2019. The spatio-temporal arrangement of these micro-earthquakes can be used to characterize frictional properties at the ice-bed interface of Rutford Ice Stream. This work was funded within the BEAMISH project by NERC AFI award numbers NE/G014159/1 and NE/G013187/1. Seismic instruments were provided by NERC SEIS-UK (Loan 1017) and the Incorporated Research Institutions for Seismology (IRIS) through the PASSCAL Instrument Center at New Mexico Tech. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2020 |
| Provided To Others? | Yes |
| URL | https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01432 |
| Title | Microseismic icequake catalogue, Rutford Ice Stream (West Antarctica), November 2018 to February 2019 |
| Description | This dataset contains ASCII files with hypocenter information, event times and magnitudes for 227029 micro-earthquakes with a magnitude range from -2.0 to -0.3 recorded from a 35-station seismic network located ~40 km upstream of the grounding line of Rutford Ice Stream, West Antarctica. For 87910 of these events, earthquake focal mechanisms (strike/dip/rake) are available. The seismic network, which recordings are the base for the event catalogue, broadly formed a rectangle with 1 km station spacing. Details on the station locations, instrument types and operation periods are included in these data files. The event catalogue encloses the geographic region between 084.142 to 083.760 degrees West and 78.204 to 78.113 degrees South. Events are located between 1.553 and 2.416 km depth. Recording took place between 20th November 2018 and 16th February 2019. The spatio-temporal arrangement of these micro-earthquakes can be used to characterize frictional properties at the ice-bed interface of Rutford Ice Stream. This work was funded within the BEAMISH project by NERC AFI award numbers NE/G014159/1 and NE/G013187/1. Seismic instruments were provided by NERC SEIS-UK (Loan 1017) and the Incorporated Research Institutions for Seismology (IRIS) through the PASSCAL Instrument Center at New Mexico Tech. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2020 |
| Provided To Others? | Yes |
| Impact | Not applicable. |
| URL | https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01432 |
| Title | Multi-azimuth long-offset seismic gathers from Korff Ice Rise, West Antarctica, 2015 |
| Description | In 2015 long offset seismic gathers were collected at Korff Ice Rise, West Antarctica, with the aim of studying fabric within the ice column and ice bed properties. Data were collected at sites within 700m of one another along the axis of the ice divide. The seismic gathers were collected at 60 deg intervals to study azimuthal variation in seismic velocity and shear wave splitting. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2018 |
| Provided To Others? | Yes |
| Impact | N/A |
| Title | Polarimetric ApRES data on a profile across Dome C, East Antarctica, 2013-2014 |
| Description | The radar data collected in 2013-2014 at Dome C, East Antarctica, aims to understand bulk preferred crystal orientation fabric near a dome. We measure changes in englacial birefringence and anisotropic scattering in 21 sites along a 36 km long profile across Dome C. These optical properties are obtained by analysing radar returns for different antenna orientations. More details can be found in Ershadi et al, 2021. Funding was provided by BAS National Capability and IPEV core funding. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2021 |
| Provided To Others? | Yes |
| Impact | Not applicable |
| URL | https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01560 |
| Title | Polarimetric phase sensitive radar from Korff Ice Rise, West Antarctica, 2014 |
| Description | In 2014 polarimetric phase sensitive radar data were collected at Korff Ice Rise, West Antarctica, with the aim of studying fabric within the ice column and ice bed properties. Data were collected at sites within 700m of one another along the axis of the ice divide. The radar data were collected by rotating the antenna through 180 deg to allow reconstruction of the azimuthal variation in power and phase. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2018 |
| Provided To Others? | Yes |
| Impact | N/A |
| Title | Positions and dimensions of the A68 icebergs between September 2020 and April 2021 |
| Description | This dataset contains daily positions of the A68 family of giant icebergs during their drift through the Scotia Sea and South Atlantic between 2020-09-01 and 2021-04-16. Positions were obtained using optical imagery collected by MODIS Aqua and Terra satellites. For the parent iceberg A68A, the evolving dimensions (long and short axis length, area) are also provided, based on Synthetic Aperture Radar imagery acquired by Copernicus Sentinel 1A and 1B satellites. This data can be used to plot the trajectories of the A68 icebergs during their drift in the Scotia Sea and near South Georgia. This data was collected during an MSc/MRes student project at the Department of Geography, University of Sheffield, in 2020/21. The work was not supported by any funding or research grants. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2023 |
| Provided To Others? | Yes |
| Impact | Not applicable. |
| URL | https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01732 |
| Title | Processed airborne radio-echo sounding data from the AGAP survey covering Antarctica's Gamburtsev Province, East Antarctica (2007/2009) |
| Description | An airborne radar survey was flown as part of the seven nation Antarctica's Gamburtsev Province (AGAP) expedition over the Gamburtsev Subglacial Mountains, Dome A, and the interior of East Antarctica during the International Polar Year 2007-2009. Operating from field camps located on either side of Dome A (namely AGAP-N and AGAP-S), we collected ~120,000 km (equivalent to 180,000 km2) of airborne survey data using two Twin Otter aircrafts - one from BAS and one from the United States Antarctic Program (USAP). The aircrafts were equipped with dual-frequency carrier-phase GPS for navigation, laser ranging systems, magnetometers, gravity meters, and ice-sounding radars. We present here the full radar dataset from the BAS PASIN radar system consisting of the deep-sounding chirp and shallow-sounding pulse-acquired data in their processed form, as well as the navigational information of each trace, the surface and bed elevation picks, ice thickness, and calculated absolute surface and bed elevations. This dataset comes primarily in the form of NetCDF and georeferenced SEGY files. To interactively engage with this newly-published dataset, we also created segmented quicklook PDF files of the radar data. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2021 |
| Provided To Others? | Yes |
| Impact | Not applicable |
| URL | https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01544 |
| Title | Processed airborne radio-echo sounding data from the BBAS survey covering the Pine Island Glacier basin, West Antarctica (2004/2005) |
| Description | An airborne radar survey was flown as part of the BBAS science programme funded by the British Antarctic Survey over the Pine Island Glacier system during the austral summer of 2004/05. This survey was a collaborative US/UK field campaign which undertook a systematic geophysical survey of the entire Amundsen Sea embayment using comparable airborne survey systems mounted in Twin Otter aircraft. Operating from a temporary field camp (PNE, S 77deg34' W 095deg56'), we collected ~35,000 km of airborne survey data. Our aircraft was equipped with dual-frequency carrier-phase GPS for navigation, radar altimeter for surface mapping, wing-tip magnetometers, gravity meter, and the first version of a new ice-sounding radar system (PASIN) used for the first time to support this survey. We present here the full radar dataset consisting of the deep-sounding chirp and shallow-sounding pulse-acquired data in their processed form, as well as the navigational information of each trace, the surface and bed elevation picks, ice thickness, and calculated absolute surface and bed elevations. This dataset comes primarily in the form of NetCDF and georeferenced SEGY files. To interactively engage with this newly-published dataset, we also created segmented quicklook PDF files of the radar data. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2021 |
| Provided To Others? | Yes |
| Impact | Not applicable |
| URL | https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01529 |
| Title | Processed airborne radio-echo sounding data from the FISS 2015 survey covering the Foundation Ice Stream, Bungenstock Ice Rise, and the Filchner Ice Shelf system, West Antarctica (2015/2016) |
| Description | An airborne radar survey was flown during the austral summer of 2015/16 over the Foundation Ice Stream, Bungenstock Ice Rise, and the Filchner ice shelf as part of the 5-year Filchner Ice Shelf System (FISS) project. This project was a NERC-funded (grant reference number: NE/L013770/1) collaborative initiative between the British Antarctic Survey, the National Oceanography Centre, the Met Office Hadley Centre, University College London, the University of Exeter, Oxford University, and the Alfred Wenger Institute to investigate how the Filchner Ice Shelf might respond to a warmer world, and what the impact of sea-level rise could be by the middle of this century. The 2015/16 aerogeophysics survey acquired ~7,000 line km of aerogeophysical data with a particular focus on the Foundation Ice Stream. Our Twin Otter aircraft was equipped with dual-frequency carrier-phase GPS for navigation, radar altimeter for surface mapping, wing-tip magnetometers, and a new ice-sounding radar system (PASIN-2). We present here the full radar dataset consisting of the deep-sounding chirp and shallow-sounding pulse-acquired data in their processed form, as well as the navigational information of each trace, the surface and bed elevation picks, ice thickness, and calculated absolute surface and bed elevations. This dataset comes primarily in the form of NetCDF and georeferenced SEGY files. To interactively engage with this newly-published dataset, we also created segmented quicklook PDF files of the radar data. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2021 |
| Provided To Others? | Yes |
| Impact | Not applicable |
| URL | https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01570 |
| Title | Processed airborne radio-echo sounding data from the FISS 2016 surveys covering the Filchner and Halley Ice Shelves, and the English Coast (western Palmer Land), West Antarctica (2016/2017) |
| Description | Three separate airborne radar surveys were flown during the austral summer of 2016/17 over the Filchner Ice Shelf and Halley Ice Shelf (West Antarctica), and over the outlet glacier flows of the English Coast (western Palmer Land, Antarctic Peninsula) during the Filchner Ice Shelf System (FISS) project. This project was a NERC-funded (grant reference number: NE/L013770/1) collaborative initiative between the British Antarctic Survey, the National Oceanography Centre, the Met Office Hadley Centre, University College London, the University of Exeter, Oxford University, and the Alfred Wenger Institute to investigate how the Filchner Ice Shelf might respond to a warmer world, and what the impact of sea-level rise could be by the middle of this century. The 2016/17 aerogeophysics surveys acquired a total of ~26,000 line km of aerogeophysical data. The FISS survey consisted of 17 survey flights totalling ~16,000 km of radar data over the Support Force, Recovery, Slessor, and Bailey ice streams of the Filchner Ice Shelf. The Halley Ice Shelf survey consisted of ~4,600 km spread over 5 flights and covering the area around the BAS Halley 6 station and the Brunt Ice Shelf. The English Coast survey consisted of ~5,000 km spread over 7 flights departing from the Sky Blu basecamp and linking several outlet glacier flows and the grounding line of the western Palmer Land, including the ENVISAT, CRYOSAT, GRACE, Landsat, Sentinel, ERS, Hall, Nikitin and Lidke ice streams. Our Twin Otter aircraft was equipped with dual-frequency carrier-phase GPS for navigation, radar altimeter for surface mapping, wing-tip magnetometers, an iMAR strapdown gravity system, and a new ice-sounding radar system (PASIN-2). We present here the full radar dataset consisting of the deep-sounding chirp and shallow-sounding pulse-acquired data in their processed form, as well as the navigational information of each trace, the surface and bed elevation picks, ice thickness, and calculated absolute surface and bed elevations. This dataset comes primarily in the form of NetCDF and georeferenced SEGY files. To interactively engage with this newly-published dataset, we also created segmented quicklook PDF files of the radar data. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2021 |
| Provided To Others? | Yes |
| Impact | Not applicable |
| URL | https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01571 |
| Title | Processed airborne radio-echo sounding data from the GRADES-IMAGE survey covering the Evans and Rutford Ice Streams, and ice rises in the Ronne Ice Shelf, West Antarctica (2006/2007) |
| Description | An airborne radar survey was flown as part of the GRADES-IMAGE project funded by BAS over the Antarctic Peninsula, Ellsworth Mountains and Filchner-Ronne Ice Shelf (also including the Evans Ice stream and Carson Inlet) mainly to image englacial layers and bedrock topography during the 2006/07 field season. Operating from temporary field camps at Sky Blu, Partiot Hills and out of RABID depot (Rutford Ice Stream), we collected ~27,550 km of airborne radio-echo sounding data over 100 hours of surveying. Our aircraft was equipped with dual-frequency carrier-phase GPS for navigation, radar altimeter for surface mapping, wing-tip magnetometers, and an ice-sounding radar system (PASIN). Note that there was no gravimetric element to this survey. We present here the full radar dataset consisting of the deep-sounding chirp and shallow-sounding pulse-acquired data in their processed form, as well as the navigational information of each trace, the surface and bed elevation picks, ice thickness, and calculated absolute surface and bed elevations. This dataset comes primarily in the form of NetCDF and georeferenced SEGY files. To interactively engage with this newly-published dataset, we also created segmented quicklook PDF files of the radar data. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2021 |
| Provided To Others? | Yes |
| Impact | Not applicable |
| URL | https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01515 |
| Title | Processed airborne radio-echo sounding data from the ICEGRAV survey covering the Recovery Catchment and interior Dronning Maud Land, East Antarctica (2012/2013) |
| Description | During the austral summer of 2012/13 a major international collaboration between Danish, US, UK, Norwegian and Argentinian scientists collected ~29,000 line km (equivalent to 464,317 km2) of aerogeophysical data over 132 hours of flight time and covering the previously poorly surveyed Recovery Glacier and Recovery Subglacial Lakes, as well as the area of Coats Land inboard from Halley VI using airborne survey systems mounted in Twin Otter aircraft. Our aircraft was equipped with dual-frequency carrier-phase GPS for navigation, radar altimeter for surface mapping, wing-tip magnetometers, an air-sea gravity meter, and an ice-sounding radar system (PASIN). We present here the full radar dataset consisting of the deep-sounding chirp in its processed form, as well as the navigational information of each trace, the surface and bed elevation picks, ice thickness, and calculated absolute surface and bed elevations. This dataset comes primarily in the form of NetCDF and georeferenced SEGY files. To interactively engage with this newly-published dataset, we also created segmented quicklook PDF files of the radar data. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2021 |
| Provided To Others? | Yes |
| Impact | Not applicable |
| URL | https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01532 |
| Title | Processed airborne radio-echo sounding data from the IMAFI survey covering the Institute and Moller ice streams and the Patriot Hills, West Antarctica (2010/2011) |
| Description | An airborne radar survey was flown over the Institute and Moller ice streams in the Weddell Sea sector of West Antarctica in the austral summer of 2010/11 as part of the Institute-Moller Antarctic Funding Initiative (IMAFI) project (grant reference number: NE/G013071/1). This project was a NERC Antarctic Funding Initiative (AFI) collaborative project between the British Antarctic Survey and the Universities of Edinburgh, York, Aberdeen and Exeter with the aim to test the hypothesis that the Institute and Moller ice streams are underlain by weak marine sediments which control the flow of the overlying ice. Operating from two static field camps close to the ice divide between the Institute and Moller ice streams and Patriot Hills, we collected ~25,000 km of airborne radio-echo sounding data across 28 survey lines. Our aircraft was equipped with dual-frequency carrier-phase GPS for navigation, radar altimeter for surface mapping, wing-tip magnetometers, a LaCoste and Romberg air-sea gravimeter, and an ice-sounding radar system (PASIN). We present here the full radar dataset consisting of the deep-sounding chirp and shallow-sounding pulse-acquired data in their processed form, as well as the navigational information of each trace, the surface and bed elevation picks, ice thickness, and calculated absolute surface and bed elevations. This dataset comes primarily in the form of NetCDF and georeferenced SEGY files. To interactively engage with this newly-published dataset, we also created segmented quicklook PDF files of the radar data. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2021 |
| Provided To Others? | Yes |
| Impact | Not applicable |
| URL | https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01527 |
| Title | Processed airborne radio-echo sounding data from the POLARGAP survey covering the South Pole, and Foundation and Recovery Glaciers, East Antarctica (2015/2016) |
| Description | During the austral summer of 2015/16, a major international collaboration funded by the European Space Agency (ESA) and with in-kind contribution from the British Antarctic Survey, the Technical University of Denmark (DTU), the Norwegian Polar Institute (NPI) and the US National Science Foundation (NSF), acquired ~38,000 line km of aerogeophysical data. The primary objective of the POLARGAP campaign was to carry out an airborne gravity survey covering the southern polar gap of the ESA gravity field mission GOCE, beyond the coverage of the GOCE orbit (south of 83.5degS), however aeromagnetics and ice-penetrating radar data were also opportunistically acquired. This survey covers the South Pole and Recovery Lakes, as well as parts of the Support Force, Foundation and Recovery Glaciers. Our Twin Otter aircraft was equipped with dual-frequency carrier-phase GPS for navigation, radar altimeter for surface mapping, wing-tip magnetometers, an air-sea gravity meter, and a new ice-sounding radar system (PASIN-2). We present here the full radar dataset consisting of the deep-sounding chirp and shallow-sounding pulse-acquired data in their processed form, as well as the navigational information of each trace, the surface and bed elevation picks, ice thickness, and calculated absolute surface and bed elevations. This dataset comes primarily in the form of NetCDF and georeferenced SEGY files. To interactively engage with this newly-published dataset, we also created segmented quicklook PDF files of the radar data. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2021 |
| Provided To Others? | Yes |
| Impact | Not applicable |
| URL | https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01552 |
| Title | Processed airborne radio-echo sounding data from the WISE-ISODYN survey across the Wilkes Subglacial Basin, East Antarctica (2005/2006) |
| Description | During the austral summer of 2005/06 a collaborative UK/Italian field campaign collected ~61,000 line km of aerogeophysical data over the previously poorly surveyed Wilkes subglacial basin, Dome C, Transantarctic Mountains, George V Land and Northern Victoria Land using airborne survey systems mounted in a Twin Otter aircraft. Our aircraft was equipped with dual-frequency carrier-phase GPS for navigation, radar altimeter for surface mapping, wing-tip magnetometers, a LaCoste and Romberg air-sea gravimeter, and an ice-sounding radar system (PASIN). We present here the full radar dataset consisting of the deep-sounding chirp and shallow-sounding pulse-acquired data in their processed form, as well as the navigational information of each trace, the surface and bed elevation picks, ice thickness, and calculated absolute surface and bed elevations. This dataset comes primarily in the form of NetCDF and georeferenced SEGY files. To interactively engage with this newly-published dataset, we also created segmented quicklook PDF files of the radar data. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2021 |
| Provided To Others? | Yes |
| Impact | Not applicable |
| URL | https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01521 |
| Title | Processed bed elevation picks from airborne radar depth sounding across East and West Antarctica (1966-1987) |
| Description | This is a collection of all vintage BAS radar data that went into BEDMAP 1 (Lythe and Vaughan, 2001) that have not been released so far as line data. BEDMAP data descries the thickness of the Antarctic ice sheet. They have been collected on surveys undertaken over the past 50 years and brought together into a single database. These data have allowed the compilation of a suite of seamless digital topographic models for the Antarctic continent and surrounding ocean. Data are provided as XYZ ASCII line data. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2020 |
| Provided To Others? | Yes |
| Impact | Not applicable. |
| URL | https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01357 |
| Title | Processed bed elevation picks from airborne radar depth sounding across Ellsworth Land (2001) |
| Description | During the 2001-02 field season a regional survey was flown on a 10 km line spacing grid over the drainage basin of the Rutford Ice stream (West Antarctica), as part of the TORUS (Targeting ice stream onset regions and under-ice systems) project. We present here the bed elevation picks from airborne radar depth sounding collected using the BAS PASIN radar depth sounding system mounted on the BAS aerogeophysical equipped Twin Otter aircraft. Data are provided as XYZ ASCII line data. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2020 |
| Provided To Others? | Yes |
| Impact | Not applicable. |
| URL | https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01277 |
| Title | Processed bed elevation picks from airborne radar depth sounding across the Dufek Massif, Pensacola Mountains (1998/99 season) |
| Description | A British Antarctic Survey Twin Otter and survey team acquired 8,300 line-km of aerogeophysics data during the Austral summer of 1998/99. Gravity and radio-echo data were acquired simultaneously with the magnetic data at a compromise constant barometric height of 2,200 m, which provides a terrain clearance of 100 m over the highest peaks. Two separate surveys were conducted; one at 5 km line spacing (tie lines at 20 km) over and stretching beyond the southern extent of the Forrestal range (main survey), and one at 2 km line spacing (tie lines at 8 km) covering the Dufek Massif (detailed survey). Ashtech Z12 dual frequency GPS receivers were used for survey navigation. Pseudorange data were supplied to a Picodas PNAV navigation interface computer, which was used to guide the pilot along the pre-planned survey lines. The actual flight path was recovered, using carrier-phase, continuous, kinematic GPS processing techniques. All pseudorange navigation data were recorded at 1 Hz on a Picodas PDAS 1000, PC-based data acquisition system. We present here the processed bed elevation picks from airborne radar depth sounding collected using the BAS PASIN radar system. Data are provided as XYZ ASCII line data. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2020 |
| Provided To Others? | Yes |
| Impact | Not applicable. |
| URL | https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01344 |
| Title | Processed bed elevation picks from airborne radar depth sounding across the Evans Ice Stream, Southern Palmer Land (1994/95 season) |
| Description | The survey collected a total of 11,500 km of data along 22 lines, spaced 12 km apart and oriented perpendicular to the strike of both the Bouguer anomaly field, as derived from land data (McGibbon and Smith, 1991), and the major sub-ice topographical features (Doake et al., 1983). The speed of the aircraft was set to produce a sample spacing of about 60 m and the data were collected at heights between 1600 and 2000 m above sea level. The gravity signal was recorded using a LaCoste and Romberg air/sea gravimeter, S-83, which has been kindly loaned to BAS by the Hydrographic Office of the Royal Navy. The meter was modified by the ZLS company for use in an aircraft. The equipment was deployed in a BAS De-Havilland Twin Otter aircraft. Differential, dual frequency, carrier phase, GPS measurements of the aircraft's motion were made using Trimble and Ashtech geodetic receivers and antennas. Ice thickness data were obtained using a BAS-built, radio echo sounding system (Corr and Popple, 1994). Ice-bottom returns over most of the survey area were obtained at a sample spacing of approximately 28 m. GPS measurements were tied into base stations in International Terrain Reference Frame network (Dietrich et al., 1998) and gravity measurements to base stations in the IGSN71 net (Jones and Ferris, 1999). We present here the processed bed elevation picks from airborne radar depth sounding collected using the BAS PASIN radar system. Data are provided as XYZ ASCII line data. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2020 |
| Provided To Others? | Yes |
| Impact | Not applicable. |
| URL | https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01347 |
| Title | Processed bed elevation picks from airborne radar depth sounding across the region of three tributaries of Slessor Glacier, Coats Land, East Antarctica (2001/02 season) |
| Description | During the austral summer of 2001/02 five thousand line kilometres of airborne radio echo sounding and aeromagnetic data were collected in the region of three tributaries of Slessor Glacier, East Antarctica, which drains into the Filchner Ice Shelf. We present here the processed bed elevation picks from airborne radar depth sounding acquired using the BAS aerogeophysicaly equipped Twin Otter aircraft. Data are provided as XYZ ASCII line data. Data were collected as part of UK Natural Environment Research Council (NERC) grant GR3/AFI2/65 |
| Type Of Material | Database/Collection of data |
| Year Produced | 2020 |
| Provided To Others? | Yes |
| Impact | Not applicable. |
| URL | https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01266 |
| Title | Processed bed elevation picks from airborne radar depth sounding from the FISS 2015 survey covering the Foundation Ice Stream and the Filchner Ice Shelf system (2015/2016) |
| Description | This dataset contains bed and surface elevation picks derived from airborne radar collected in 2015/16 over Foundation Ice Stream and Filchner Ice Shelf as part of the 5-year Filchner Ice Shelf System (FISS) project funded by NERC (grant reference number: NE/L013770/1) and awarded to the British Antarctic Survey with contribution from the National Oceanography Centre, the Met Office Hadley Centre, University College London, the University of Exeter, Oxford University, and the Alfred Wenger Institute. The aim of this project was to investigate how the Filchner Ice Shelf might respond to a warmer world, and what the impact of sea-level rise could be by the middle of this century. This collaborative initiative collected ~7,000 line-km of new aerogeophysical data using the 150MHz PASIN radar echo sounding system (Corr et al., 2007) deployed on a British Antarctic Survey (BAS) Twin Otter. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2021 |
| Provided To Others? | Yes |
| Impact | Not applicable |
| URL | https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01572 |
| Title | Processed bed elevation picks from airborne radar depth sounding from the FISS 2016 survey covering the Filchner and Halley Ice Shelves (2016/2017) |
| Description | This dataset contains bed and surface elevation picks derived from airborne radar collected in 2016/17 over the Filchner Ice Shelf and Halley Ice Shelf (West Antarctica) as part of the 5-year Filchner Ice Shelf System (FISS) project funded by NERC (grant reference number: NE/L013770/1) and awarded to the British Antarctic Survey with contribution from the National Oceanography Centre, the Met Office Hadley Centre, University College London, the University of Exeter, Oxford University, and the Alfred Wenger Institute. The aim of this project was to investigate how the Filchner Ice Shelf might respond to a warmer world, and what the impact of sea-level rise could be by the middle of this century. This collaborative initiative collected ~15,000 line-km of new aerogeophysical data using the 150MHz PASIN radar echo sounding system (Corr et al., 2007) deployed on a British Antarctic Survey (BAS) Twin Otter. The majority of flights were flown as part of FISS over the Support Force, Recovery, Slessor, and Bailey ice streams. Separate flights over Halley 6 research station and Brunt Ice Shelf were also collected as part of this season. The bed and surface elevation picks for the English Coast part of this season are available at: https://doi.org/10.5285/e07d62bf-d58c-4187-a019-59be998939cc. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2021 |
| Provided To Others? | Yes |
| Impact | Not applicable |
| URL | https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01573 |
| Title | Processed bed elevation picks from the POLARGAP radar survey across the Pensacola-Pole Basin (2015/2016) |
| Description | This dataset contains bed and surface elevation picks derived from airborne radar collected during the POLARGAP 2015/16 project funded by the European Space Agency (ESA) and with in-kind contribution from the British Antarctic Survey, the Technical University of Denmark (DTU), the Norwegian Polar Institute (NPI) and the US National Science Foundation (NSF). This collaborative project collected ~38,000 line-km of new aerogeophysical data using the 150MHz PASIN radar echo sounding system (Corr et al., 2007) deployed on a British Antarctic Survey (BAS) Twin Otter. The primary objective of the POLARGAP campaign was to carry out an airborne gravity survey covering the southern polar gap beyond the coverage of the GOCE orbit. This dataset covers the South Pole as well as parts of the Support Force, Foundation and Recovery Glaciers. The bed pick data acquired during the POLARGAP survey over the Recovery Lakes is archived at NPI: https://doi.org/10.21334/npolar.2019.ae99f750. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2021 |
| Provided To Others? | Yes |
| Impact | Not applicable |
| URL | https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01568 |
| Title | Processed ice shelf base picks from airborne radar depth sounding across the Pine Island Glacier Ice Shelf (2010-2011) |
| Description | In 2011, aerogeophysics data were acquired over Pine Island Glacier, West Antarctica on a grid comprising 30 transverse lines across the glacier, each around 20 km long, and with a spacing of roughly 500 m between the lines. The orientation of the lines was selected to be perpendicular to the surface features visible in satellite images in the central part of the ice shelf. Elevation of the ice-surface directly beneath the aircraft was simultaneously measured using a nadir-pointing laser altimeter. We present here the processed bed elevation picks from airborne radar depth sounding collected using the BAS PASIN radar system. Data are provided as XYZ ASCII line data. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2020 |
| Provided To Others? | Yes |
| Impact | Not applicable. |
| URL | https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01356 |
| Title | Processed line aerogravity data from the FISS 2016 surveys covering the Filchner and Halley Ice Shelves, and the English Coast (western Palmer Land), West Antarctica (2016/2017) |
| Description | Three separate airborne radar surveys were flown during the austral summer of 2016/17 over the Filchner Ice Shelf and Halley Ice Shelf (West Antarctica), and over the outlet glacier flows of the English Coast (western Palmer Land, Antarctic Peninsula) during the Filchner Ice Shelf System (FISS) project. This project was a NERC-funded (grant reference number: NE/L013770/1) collaborative initiative between the British Antarctic Survey, the National Oceanography Centre, the Met Office Hadley Centre, University College London, the University of Exeter, Oxford University, and the Alfred Wenger Institute to investigate how the Filchner Ice Shelf might respond to a warmer world, and what the impact of sea-level rise could be by the middle of this century. The 2016/17 aerogeophysics surveys acquired a total of ~26,000 line km of aerogeophysical data. The FISS survey consisted of 17 survey flights totalling ~16,000 km of radar data over the Support Force, Recovery, Slessor, and Bailey ice streams of the Filchner Ice Shelf. The Halley Ice Shelf survey consisted of ~4,600 km spread over 5 flights and covering the area around the BAS Halley 6 station and the Brunt Ice Shelf. The English Coast survey consisted of ~5,000 km spread over 7 flights departing from the Sky Blu basecamp and linking several outlet glacier flows and the grounding line of the western Palmer Land, including the ENVISAT, CRYOSAT, GRACE, Landsat, Sentinel, ERS, Hall, Nikitin and Lidke ice streams. Our Twin Otter aircraft was equipped with dual-frequency carrier-phase GPS for navigation, radar altimeter for surface mapping, wing-tip magnetometers, an iMAR strapdown gravity system, and a new ice-sounding radar system (PASIN-2). We present here the processed line aerogravity data collected using the iMAR strapdown gravity system mounted in the BAS aerogeophysically equiped Twin Otter aircraft. Data are provided as XYZ ASCII line data. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2021 |
| Provided To Others? | Yes |
| Impact | Not applicable |
| URL | https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01574 |
| Title | Processed line aeromagnetic data from the FISS 2015 survey covering the Foundation Ice Stream (2015/2016) |
| Description | An airborne radar survey was flown during the austral summer of 2015/16 over the Foundation Ice Stream, Bungenstock Ice Rise, and the Filchner ice shelf as part of the 5-year Filchner Ice Shelf System (FISS) project. This project was a NERC-funded (grant reference number: NE/L013770/1) collaborative initiative between the British Antarctic Survey, the National Oceanography Centre, the Met Office Hadley Centre, University College London, the University of Exeter, Oxford University, and the Alfred Wenger Institute to investigate how the Filchner Ice Shelf might respond to a warmer world, and what the impact of sea-level rise could be by the middle of this century. The 2015/16 aerogeophysics survey acquired ~7,000 line km of aerogeophysical data with a particular focus on the Foundation Ice Stream. Our Twin Otter aircraft was equipped with dual-frequency carrier-phase GPS for navigation, radar altimeter for surface mapping, wing-tip magnetometers, and a new ice-sounding radar system (PASIN-2). We present here the processed line aeromagnetic data collected using wing-tip magnetometers mounted in the BAS aerogeophysically equipped Twin Otter aircraft. Data are provided as XYZ ASCII line data. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2021 |
| Provided To Others? | Yes |
| Impact | Not applicable |
| URL | https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01578 |
| Title | Processed line aeromagnetic data from the FISS 2016 surveys covering the Filchner and Halley Ice Shelves, and the English Coast (western Palmer Land), West Antarctica (2016/2017) |
| Description | Three separate airborne radar surveys were flown during the austral summer of 2016/17 over the Filchner Ice Shelf and Halley Ice Shelf (West Antarctica), and over the outlet glacier flows of the English Coast (western Palmer Land, Antarctic Peninsula) during the Filchner Ice Shelf System (FISS) project. This project was a NERC-funded (grant reference number: NE/L013770/1) collaborative initiative between the British Antarctic Survey, the National Oceanography Centre, the Met Office Hadley Centre, University College London, the University of Exeter, Oxford University, and the Alfred Wenger Institute to investigate how the Filchner Ice Shelf might respond to a warmer world, and what the impact of sea-level rise could be by the middle of this century. The 2016/17 aerogeophysics surveys acquired a total of ~26,000 line km of aerogeophysical data. The FISS survey consisted of 17 survey flights totalling ~16,000 km of radar data over the Support Force, Recovery, Slessor, and Bailey ice streams of the Filchner Ice Shelf. The Halley Ice Shelf survey consisted of ~4,600 km spread over 5 flights and covering the area around the BAS Halley 6 station and the Brunt Ice Shelf. The English Coast survey consisted of ~5,000 km spread over 7 flights departing from the Sky Blu basecamp and linking several outlet glacier flows and the grounding line of the western Palmer Land, including the ENVISAT, CRYOSAT, GRACE, Landsat, Sentinel, ERS, Hall, Nikitin and Lidke ice streams. Our Twin Otter aircraft was equipped with dual-frequency carrier-phase GPS for navigation, radar altimeter for surface mapping, wing-tip magnetometers, an iMAR strapdown gravity system, and a new ice-sounding radar system (PASIN-2). We present here the processed line aeromagnetic data collected using wing-tip magnetometers mounted in the BAS aerogeophysically equipped Twin Otter aircraft. Data are provided as XYZ ASCII line data. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2021 |
| Provided To Others? | Yes |
| Impact | Not applicable |
| URL | https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01577 |
| Title | Radar characterization of ice crystal orientation fabric and anisotropic rheology within Rutford Ice Stream, 2017-2019 |
| Description | We use polarimetric radar sounding to investigate variation in ice crystal orientation fabric within the near-surface (top 40-300 m) of Rutford Ice Stream, West Antarctica. To assess the influence of the fabric on ice flow, we use an analytical model to derive anisotropic enhancements of the flow law from the fabric measurements. In the shallowest ice (40-100 m) the azimuthal fabric orientation is consistent with flow-induced development and correlates with the surface strain field. Notably, toward the ice-stream margins, both the horizontal compression angle and fabric orientation tend toward 45 degrees relative to ice flow. This result is consistent with theoretical predictions of flow-induced fabric under simple shear, but to our knowledge has never been observed. The fabric orientation in deeper ice (100-300 m) is significantly misaligned with shallower ice in some locations, and therefore inconsistent with the local surface strain field. This result represents a new challenge for ice flow models which typically infer basal properties from the surface conditions assuming simplified vertical variation of ice flow. Our technique retrieves azimuthal variations in fabric but is insensitive to vertical variation, and we therefore constrain the fabric and rheology within two end-members: a vertical girdle or a horizontal pole. Our hypotheses are that fabric near the center of the ice-stream tends to a vertical girdle that enhances horizontal compression, and near the ice-stream margins tends to a horizontal pole that enhances lateral shear. ApRES radar data were collected as part of the BEAMISH Project (NERC AFI award numbers NE/G014159/1 and NE/G013187/1). Tom Jordan would like to acknowledge support from EU Horizon 2020 grant 747336-BRISRES-H2020-MSCA-IF-2016. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2020 |
| Provided To Others? | Yes |
| URL | https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01428 |
| Title | Radar-derived bed reflectivity of Rutford Ice Stream, West Antarctica, December 2016 to January 2017 |
| Description | The dataset presented here contains a csv-file including the coordinates, received power of the bed reflection and the two-way travel time of the bed reflection. The X and Y coordinates are projected in EPSG:3031 - WGS 84 / Antarctic Polar Stereographic coordinate system. Data presented here have been frequency filtered and 2D migrated (using a finite difference approach and migration velocity of 0.168 m ns-1), followed by the picking of the bed reflection using ReflexW software (Sandmeier Scientific Software). The received power is calculated within a 280 ns time window centred on, and encompassing, the bed reflection (Gades et al., 2000). This work was funded within the BEAMISH project by NERC AFI award numbers NE/G014159/1 and NE/G013187/1. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2020 |
| Provided To Others? | Yes |
| Impact | Not applicable. |
| URL | https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01438 |
| Title | Records of isotopes, anions, cations and organic compounds measured in the Bouvet Island ice core for the time period 2001-2016 |
| Description | These data files contain the records of isotopes, anions, cations and organic compounds measured in the Bouvet Island ice core. The Bouvet ice core was collected as part of the Antarctic Circumnavigation Expedition (ACE) 2016-2017, and is the first ever ice core collected on the island. All analyses was carried out at the British Antarctic Survey, Cambridge, United Kingdom between 2016 and 2018. Analyses were carried out by analytical staff and a PhD student. Isotopes were measured using a Picarro instrument, anions and cations on a Dionex Intergrion Ion Chromatograph, and organics using High-Performance Liquid Chromotography Mass Spectrometry (HPLC-MS). Isotopes, anions and cations are measured as discreet 5cm core samples, while organics are measured at annual resolution core samples. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2019 |
| Provided To Others? | Yes |
| Impact | N/A |
| Title | Seismic bathymetry data, Antarctic Peninsula, Larsen C Ice Shelf, 2016 |
| Description | In 2016, a series of ice shelf cavity bathymetry point measurements were made across Larsen C Ice Shelf, West Antarctica. The sites were selected to address deficiencies in the coverage provided by existing data sets. A hammer and plate seismic source was used. Seismic reflection data were recorded on 24 receivers at 10 m interval and 30 m offset. Sea bed reflections are observed at all sites. Surface elevation measurements are provided to allow estimation of ice thickness when an ice base reflection is not visible. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2019 |
| Provided To Others? | Yes |
| Impact | N/A |
| Title | Seismic bathymetry surveys of Subglacial Lake CECs, West Antarctica, 2016 and 2022 |
| Description | Subglacial Lake CECs was previously identified using radar profile data. Subglacial Lake CECs lies beneath 2650 m of ice, close to the Ellsworth Mountains at the divide between the Minnesota Glacier and Rutford and Institute Ice Streams in Antarctica. Four seismic reflection profiles were acquired across the lake to determine water column depth and investigate lake bed properties. Shot gathers with 48 channels and a maximum offset of 500 m were recorded. A seismic refraction experiment was undertaken to determine seismic velocities in the firn. Dual frequency and RTK GPS were used to determine shot locations. Seismic surveys indicate a maximum water depth of 301.3 +/- 1.5 m, at the widest part of the lake, with an estimated lake volume of 2.5 +/- 0.3 km3. Imaging of the ice-lake interface indicates topography with slopes of up to 1.9 degrees. This research was supported by the Natural Environment Research Council, British Antarctic Survey (Polar Science for Planet Earth Programme) and Centro de Estudios Cientificos, Valdivia, Chile. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2023 |
| Provided To Others? | Yes |
| Impact | Not applicable. |
| URL | https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01724 |
| Title | Seismic refraction data from two sites on Antarctica's Larsen C Ice Shelf, Nov 2017, following the calving of Iceberg A68 |
| Description | Seismic refraction data were acquired at two sites on Antarctica's Larsen C Ice Shelf, in November 2017. The acquisition was performed to measure seismic anisotropy, a proxy for the stress condition, in the ice shelf following the calving of Iceberg A68 in July 2017. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2019 |
| Provided To Others? | Yes |
| Impact | N/A |
| Title | Subglacial Lake Ellsworth, 2007/08 shallow ice core for density measurements |
| Description | Analysis of shallow ice cores collected in the region of subglacial Lake Ellsworth. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2019 |
| Provided To Others? | Yes |
| Impact | N/A |
| Title | Subglacial lakes and hydrology across the Ellsworth Subglacial Highlands, West Antarctica, 1977-2017 |
| Description | A new subglacial bed Digital Elevation Model (DEM) from Ellsworth Subglacial Highlands (ESH) was created from previously gridded bed elevation data and new unpublished radar data. The new DEM includes the upper reaches of Pine Island Glacier, Rutford and Institute Ice Streams and reveals new topographical features. The main findings on this new DEM are two linear deep throughs with a perpendicular transection valley near Subglacial Lake Ellsworth. Additionally, using the new DEM and ice surface elevation data from CryoSat2 ice surface DEM, a hydropotential model was built and used to create a detailed hydropotential model of ESH to simulate the subglacial hydrological network. This approach allowed us to characterize basal hydrology, subglacial water catchments and connections between them. In this characterization we noticed the mismatch between subglacial hydrological catchment and ice surfaces catchment of Rutford Ice Stream, Pine Island Glacier and Thwaites Glacier. Funding was provided by NERC Antarctic Funding Initiative (AFI) grants NE/D008751/1, NE/D009200/1, and NE/D008638/1, and NERC grant NE/G013071/1. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2020 |
| Provided To Others? | Yes |
| Impact | Not applicable. |
| URL | https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01401 |
| Title | Surface elevation of 69 Greenland Ice Sheet morphologies and associated d18O anomalies (with respect to Pre-industrial) simulated by HadCM3 |
| Description | The text file (.csv) contains d18O changes simulated at six Greenland deep ice cores (NEEM, NGRIP, GRIP, GISP2, Camp Century and DYE3) from 69 simulations performed using the isotope-enabled HadCM3 climate model forced with mid last interglacial boundary conditions, centred at 125,000 years ago. HadCM3 is used to reproduce the d18O response to 69 modified Last Interglacial (LIG) Greenland Ice Sheet (GIS) morphologies at the ice-core sites. To parameterise the set of 69 GIS morphologies, we undertake a Principal Component Analysis (PCA) approach. The text file also contains the 8PC coefficients for each of the 69 morphologies. The netcdf file (.nc) contains the 8PC shapes and the average shape. To obtain any of the 69 GIS morphologies: (1) store the 8 PC coefficients of a specific GIS morphology and, (2) take a linear combination of the PC shapes (according to those coefficients) and add the average shape. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2020 |
| Provided To Others? | Yes |
| Impact | N/A |
| Title | Time series of water pressure, water temperature and ground temperature from lakes Orajarvi (Finland), and Tomasee and Silsersee (Switzerland) from winters 2018-2021 |
| Description | These datasets show how lake water-pressure fluctuated through time over several months in seasonally-frozen catchments in winter. These catchments were in three settings: the lowland Finnish Arctic, an alpine valley and a high cirque in Switzerland. The water-pressure data are accompanied by water temperature and (except for Orajarvi), ground temperature for the same periods. Together, they were used to detect and quantify the water content of snow falling on the lake surfaces. The locations, method of data collection and analysis and the results are described in detail in Pritchard, H. D., Farinotti, D., & Colwell, S. (2021). This work was funded by Natural Environment Research Council (UK) core funding to the British Antarctic Survey, and a fellowship from the Swiss Federal Institute for Forest, Snow and Landscape Research WSL, CH-8903 Birmensdorf, Switzerland. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2021 |
| Provided To Others? | Yes |
| Impact | Not applicable. |
| URL | https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01471 |
| Title | Water column and ice thickness measurements of the Filchner-Ronne Ice Shelf derived from point seismic observations collected between 2015-2017 |
| Description | This data are derived from single point seismic data collected across the Filchner-Ronne Ice Shelf. The seismic data were collected over the course of three seasons by a number of field parties, consisting of two main surveys between the 15/16 and 16/17 austral summers and several smaller surveys, as part of a joint initiative between the British Antarctic Survey (BAS) and the Alfred-Wegener-Institute (AWI) in the framework of the "Filchner Ice Shelf System" (FISS) and the "Filchner Ice Shelf Project" (FISP). A total of 256 point seismic measurements were made, of which 248 had clearly visible reflectors and were deemed usable. Each data point consists of a location, together with measurements of ice thickness and water column thickness. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2018 |
| Provided To Others? | Yes |
| Impact | N/A |
| Title | Water-stable isotope (d18O, dD), sodium (23Na), and magnesium (24Mg) Continuous Flow Analysis data for the Palmer ice core, Palmer Land, Antarctic Peninsula, 1621-2011 C.E. |
| Description | Here we provide the Palmer ice core Water-stable isotope (d18O, dD), sodium (23Na), and magnesium (24Mg) palaeo archives. The Palmer drill site (73.86 S, 65.46 W, 1897 m a.s.l.) is located on the southern part of the Antarctic Peninsula, Palmer Land. The core, firn and ice, were drilled in December 2012 to a depth of 133 m below the snow surface. The Palmer ice core covers 391 years, 1621-2011 C.E. The data were measured on the British Antarctic Survey Continuous Flow Analysis system in Cambridge, UK. Data is given both on depth and temporal (annual means) scales. The d18O and dD records were measured on a CFA laser spectroscopy system and the 23Na and 24Mg data were measured on the CFA ICP-MS setup. The ice core drilling and analysis were funded by the British Antarctic Survey, Natural Environment Research Council (NERC, Cambridge, UK), part of UK research and innovation and NERC grant NE/J020710/1. The Palmer analysis was funded by Haus der Kulturen der Welt (HKW, Berlin, Germany), in collaboration with the Anthropocene working group (AWG). |
| Type Of Material | Database/Collection of data |
| Year Produced | 2022 |
| Provided To Others? | Yes |
| Impact | Not applicable |
| URL | https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01646 |
| Description | Collaboration with NCPOR National centre for Polar and Ocean Research (India) started. |
| Organisation | National Centre for Polar and Ocean Research |
| Country | India |
| Sector | Public |
| PI Contribution | Common interests in Antarctic climate research. Plans developing for collaborative project. |
| Collaborator Contribution | Common interests in Antarctic climate research. Plans developing for collaborative project. |
| Impact | No impact yet |
| Start Year | 2019 |
| Description | Collaboration with Swiss Federal Institute for Forest, Snow and Landscape Research (WSL) started |
| Organisation | Swiss Federal Institute for Forest, Snow and Landscape Research |
| Department | WSL Institute for Snow and Avalanche Research SLF |
| Country | Switzerland |
| Sector | Academic/University |
| PI Contribution | Common interests in snow research. |
| Collaborator Contribution | Common interests in snow research. |
| Impact | No impact yet |
| Start Year | 2019 |
| Description | GHOST - AWI oversnow vibroseis |
| Organisation | Alfred-Wegener Institute for Polar and Marine Research |
| Country | Germany |
| Sector | Private |
| PI Contribution | Developed the overall research programme and proposal, of which this collaboration is an integral component. We will provide the conventional oversnow seismic and related geophysical equipment, as well as overall co-ordination of fieldwork with UK (NERC/BAS) and US (NSF/ASC) operations and logistics teams. Overall leadership and co-ordination of the science project. |
| Collaborator Contribution | Complete oversnow vibroseis system. Two personnel for two full Antarctic field seasons. Preparation for fieldwork, and follow-up activities. |
| Impact | Not applicable at this stage. |
| Start Year | 2017 |
| Description | High-altitude glaciers and the environment in the Elbrus area of the Caucasus |
| Organisation | Russian Academy of Sciences |
| Country | Russian Federation |
| Sector | Public |
| PI Contribution | Host visiting researcher from collaborating institute. Facilities and resources for ice core analysis; complete the ice core analysis. Collaborate on outputs and outcomes. |
| Collaborator Contribution | Provide samples (ice core). Provide visiting researcher. Assist with ice core analysis. Collaborate on outputs and outcomes. |
| Impact | Ice core analysis has been completed. Results are still being processed. |
| Start Year | 2021 |
| Description | New collaboration established with Penn State University, USA |
| Organisation | Penn State University |
| Department | Department of Geosciences |
| Country | United States |
| Sector | Academic/University |
| PI Contribution | Prof Sridhar Anandakrishnan will be incorporated into the field team. |
| Collaborator Contribution | Penn State will contribute a large array of portable passive seismic recorders to the geophysical monitoring part of the data acquisition. Prof Anandakrishnan has successfully applied for funding from the US NSF to support his role in this collaboration. |
| Impact | N/A |
| Start Year | 2016 |
| Description | New collaboration started with University of Leeds |
| Organisation | University of Leeds |
| Country | United Kingdom |
| Sector | Academic/University |
| PI Contribution | Fully funded PhD student and project resources. Data set for student. Lead the students supervision. |
| Collaborator Contribution | Support student by supervision and guidance. Host for periods at the university for this supervision and guidance. |
| Impact | Paper published in Journal of Geophysical Research (Schlegel, et al, 2021, doii 10.1029/2021jf006349). Successful completion of PhD by student Rebecca Schlegel |
| Start Year | 2017 |
| Description | New collaboration started with University of Liverpool |
| Organisation | University of Liverpool |
| Country | United Kingdom |
| Sector | Academic/University |
| PI Contribution | Provide unique subglacial samples for analysis |
| Collaborator Contribution | Analysis of sediment samples |
| Impact | Still in progress |
| Start Year | 2021 |
| Description | New collaboration started with University of Madison-Wisconsin |
| Organisation | University of Wisconsin-Madison |
| Country | United States |
| Sector | Academic/University |
| PI Contribution | Provided unique subglacial sediment samples for analysis and testing |
| Collaborator Contribution | Analysis and testing of subglacial sediment samples |
| Impact | Still in progress |
| Start Year | 2021 |
| Description | New collaboration started with the University of Otago, New Zealand |
| Organisation | University of Otago |
| Country | New Zealand |
| Sector | Academic/University |
| PI Contribution | Ice core drilling expertise and equipment. Participation in joint Antarctic field campaign. |
| Collaborator Contribution | Seismic expertise and equipment. Project leadership and funding. Management of joint Antarctic field campaign. |
| Impact | Successful joint fieldwork campaign. Ice core drilling, geophysics and related experiments completed. |
| Start Year | 2019 |
| Description | New collaboration started with the University of Oxford |
| Organisation | University of Oxford |
| Country | United Kingdom |
| Sector | Academic/University |
| PI Contribution | Worked jointly with collaborator to deploy a novel new fibre-optic technique for seismic acquisition in ice sheets and glacier environments |
| Collaborator Contribution | Worked jointly with project team to deploy a novel new fibre-optic technique for seismic acquisition in ice sheets and glacier environments. Links with industry partner secured the loan of essential equipment. Also provided other necessary equipment and expertise. |
| Impact | Successful field deployment of new acquisition technique. Initial data sets are currently being evaluated. |
| Start Year | 2019 |
| Description | Seismic investigation of Subglacial Lake CECs. From 2019 onwards - "Exploration of Subglacial Lake CECs (SLCECs)" |
| Organisation | CECs, Centro de Estudios CientÃficos |
| Country | Chile |
| Sector | Charity/Non Profit |
| PI Contribution | Provide expertise, equipment and expert personnel to conduct a seismic survey over an Antarctic subglacial lake. Cover return costs of commercial freight of seismic equipment between UK and Chile. First part of this collaboration now completed. Update on next stage, 2020: following the successful first part of this collaboration (seismic exploration of SLCECs), it has progressed to the next stage. For this, we will lead development and deployment of a clean hot-water drill and sampling techniques to access this subglacial lake. We will also provide some of the logistics and operations support. Lead on environmental issues and on securing environmental permits. |
| Collaborator Contribution | Provide equipment and manpower to conduct a seismic survey over an Antarctic subglacial lake. Cover costs of commercial freight to, and transport within Antarctica. Cover costs of explosives and consumables. Collaborate on providing the clean drill and sampling techniques. Take the lead on delivering logistics for the project. Collaborate on environmental issues and on securing environmental permits. |
| Impact | Joint fieldwork campaign successfully completed. Publications currently in draft form. Chilean PhD student now enrolled and following programme of research in the UK (Durham University). |
| Start Year | 2016 |
| Title | Measuring snowfall |
| Description | A system for measuring snowfall comprising: a pressure sensor disposed beneath the surface of an inland body of water located within a region of interest; and a data logger operably connected to the pressure sensor, the data logger being arranged to receive and log data from the pressure sensor. |
| IP Reference | GB2002441.0 |
| Protection | Patent application published |
| Year Protection Granted | |
| Licensed | No |
| Impact | This is a new development so no notable impacts have arisen yet. |
| Title | Helicopter-borne ice-sounding radar - 2020 update |
| Description | With help from BAS engineers, our existing, ground-based ice-sounding pulsed HF radar is being modified to be operated from a helicopter. Development is still on-going (2018-2019), but structural flight tests in the UK and deployment tests over glaciers in Svalbard were successful. Successful deployment to Nepal Himalayas in 2020. Surveyed a group of glaciers in the Khumbu (Everest) region. |
| Type Of Technology | Detection Devices |
| Year Produced | 2020 |
| Impact | Although the development is still on-going, the radar is being designed specifically to measure the thickness of rock- and debris-covered glaciers in the Himalayas (and potentially, similar high-mountain glacierised areas). Current radar surveys cannot penetrate the surface debris layer so the thickness of the vast majority of these glaciers is not known. This is a severe limitation to assessments of water resources affecting millions of people in these regions. |
| Title | Snow accumulation detection |
| Description | A novel new method for measuring snowfall and the amount of water it contains. Vast improvement over traditional methods in terms of accuracy and of its relevance to weather and climate models |
| Type Of Technology | New/Improved Technique/Technology |
| Year Produced | 2021 |
| Impact | The technique is new. Paper describing it has only just been published. Impacts are yet to develop. |
| Description | Anglia News TV interview |
| Form Of Engagement Activity | A broadcast e.g. TV/radio/film/podcast (other than news/press) |
| Part Of Official Scheme? | No |
| Geographic Reach | Regional |
| Primary Audience | Public/other audiences |
| Results and Impact | Anglia News TV interview |
| Year(s) Of Engagement Activity | 2020 |
| Description | Article in Operations Engineering magazine |
| Form Of Engagement Activity | A magazine, newsletter or online publication |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Industry/Business |
| Results and Impact | Featured article in industry magazine, including front-cover photograph |
| Year(s) Of Engagement Activity | 2019 |
| URL | https://www.soe.org.uk/resources-home/publications.html |
| Description | Article in Rockwatch Magazine |
| Form Of Engagement Activity | A magazine, newsletter or online publication |
| Part Of Official Scheme? | No |
| Geographic Reach | National |
| Primary Audience | Schools |
| Results and Impact | Article in Rockwatch Magazine, UK Nationwide Geology Club for Children. https://www.rockwatch.org.uk/rockwatch-magazine-issue-86/ Inspired and prompted by The Song of the Ice, audio-visual and music score by Steve Garrett |
| Year(s) Of Engagement Activity | 2020 |
| Description | BBC Radio4 "Last Word" interview |
| Form Of Engagement Activity | A broadcast e.g. TV/radio/film/podcast (other than news/press) |
| Part Of Official Scheme? | No |
| Geographic Reach | National |
| Primary Audience | Public/other audiences |
| Results and Impact | Interview on BBC Radio 4 "Last Word" programme. Obituary for former colleague Dr C S M Doake |
| Year(s) Of Engagement Activity | 2021 |
| Description | BBC TV News interview (World News) |
| Form Of Engagement Activity | A broadcast e.g. TV/radio/film/podcast (other than news/press) |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Public/other audiences |
| Results and Impact | BBC TV News interview (World News). |
| Year(s) Of Engagement Activity | 2020 |
| Description | Brunt Ice Shelf iceberg calving - intense media activity over ~1 week (Feb-Mar 2021) |
| Form Of Engagement Activity | A press release, press conference or response to a media enquiry/interview |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Public/other audiences |
| Results and Impact | Responses to many media requests following the calving of an iceberg from the Brunt Ice Shelf. Considerable interest in possilbe implications for Halley Station. Majority of the responses were done by Dr Oliver Marsh |
| Year(s) Of Engagement Activity | 2021 |
| URL | https://www.bas.ac.uk/media-post/brunt-ice-shelf-in-antarctica-calves/ |
| Description | COP26 Polar Zero exhibition and related media activities. |
| Form Of Engagement Activity | Participation in an activity, workshop or similar |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Policymakers/politicians |
| Results and Impact | Highly-acclaimed and influential exhibition at COP26 UN Climate Change Conference. Polar Zero is a collaboration between British Antarctic Survey (BAS), global engineering and consulting firm Arup and the Royal College of Art (RCA), is funded by the Arts and Humanities Research Council (AHRC). The exhibition features an original glass sculpture encasing Antarctic air from the year 1765 - the date that scientists say predates the Industrial Revolution - and an Antarctic ice core containing trapped air bubbles that reveal a unique record of our past climate. Locked deep in Antarctic ice is a unique archive of the Earth's history reaching back 800,000 years. Tiny bubbles of air that were trapped as snow fell reveal the astonishing rate of increase in atmospheric carbon dioxide since the start of the Industrial Revolution. |
| Year(s) Of Engagement Activity | 2021 |
| URL | https://artsandculture.google.com/story/1QWRwC49O94jcw |
| Description | COP26 UN Climate Change conference participation |
| Form Of Engagement Activity | Participation in an activity, workshop or similar |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Policymakers/politicians |
| Results and Impact | A number of staff contributed to events at COP26 including taking part in discussions and meetings, meeting delegates and media activities. |
| Year(s) Of Engagement Activity | 2021 |
| URL | https://ukcop26.org/ |
| Description | Ice Worlds Polar Science and Exploration Festival, Greenwich, prior to COP26 |
| Form Of Engagement Activity | Participation in an activity, workshop or similar |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Public/other audiences |
| Results and Impact | Many staff took part in the Ice Worlds festival at Greenwich Maritime Museum, prior to COP26 in Glasgow. |
| Year(s) Of Engagement Activity | 2021 |
| URL | https://www.rmg.co.uk/whats-on/national-maritime-museum/ice-worlds-rrs-sir-david-attenborough-greenw... |
| Description | Invited gala dinner speaker |
| Form Of Engagement Activity | A talk or presentation |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Public/other audiences |
| Results and Impact | Invited guest-speaker at New Scientist Live 2019 (NSL19) Gala Dinner.; Q&A session with NSL19 Festival chair. Small audience of dinner guests, but drawn from a wide international range of general public with science interest. |
| Year(s) Of Engagement Activity | 2019 |
| Description | National Geographic - photographs and article |
| Form Of Engagement Activity | A magazine, newsletter or online publication |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Public/other audiences |
| Results and Impact | Photographs and article published on-line by National Geographic |
| Year(s) Of Engagement Activity | 2019 |
| URL | https://www.nationalgeographic.co.uk/environment/2019/03/hunt-answers-beneath-antarcticas-ice |
| Description | New Scientist Live 2019 |
| Form Of Engagement Activity | A talk or presentation |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Public/other audiences |
| Results and Impact | Invited talk to the general public at the 2019 New Scientist Live science festival. Venue Excel Centre, London; 5-day international science festival, October 2019. https://www.excel.london/whats-on/new-scientist-live-2019 Invited speaker on the Earth Science stage. Live audience of 100-200; on-line audience is global |
| Year(s) Of Engagement Activity | 2019 |
| URL | https://www.excel.london/whats-on/new-scientist-live-2019 |
| Description | Presentation to UKRI staff, Polaris House Swindon. |
| Form Of Engagement Activity | A talk or presentation |
| Part Of Official Scheme? | No |
| Geographic Reach | Local |
| Primary Audience | Policymakers/politicians |
| Results and Impact | Presentation to funding council staff at Polaris House, Swindon. Primarily NERC, with some attendees from other UKRI councils |
| Year(s) Of Engagement Activity | 2019 |
| Description | Press release and subsequent media, and media-realted activities. |
| Form Of Engagement Activity | A press release, press conference or response to a media enquiry/interview |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Media (as a channel to the public) |
| Results and Impact | Press release issued at a key stage in the fieldwork campaign (January 2019). Attracted considerable interest, both UK and internationally. High number of interviews (>10) and other activities (printed media, web-based activities et)c delivered, and still on-going (taken by >150 media outlets so far, as of March 2019). |
| Year(s) Of Engagement Activity | 2019 |
| URL | https://www.bas.ac.uk/media-post/scientists-drill-to-record-depths-in-west-antarctica/ |
| Description | Public lecture at Fort William Mountain Festival |
| Form Of Engagement Activity | A talk or presentation |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Public/other audiences |
| Results and Impact | Invited talk at Fort William Mountain Festival during the "Polar Evening" event |
| Year(s) Of Engagement Activity | 2020 |
| Description | The Song of The Ice, Cambridge 2022 |
| Form Of Engagement Activity | Participation in an activity, workshop or similar |
| Part Of Official Scheme? | No |
| Geographic Reach | Local |
| Primary Audience | Public/other audiences |
| Results and Impact | Public presentation of Song of the Ice in Cambridge. Event also included three related talks from scientists involved in the project talking about the science behind it and their personal reflections on being involved. Intention was to reach a combination of British Antarctic Survey staff, Cambridge University staff and students (including Scott Polar Research Institute) and the local general public. One significant outcome was the invitation for the artist involved to repeat the event at the subsequent UK Antarctic Science and the International Glaciological Society meetings in Edinburgh |
| Year(s) Of Engagement Activity | 2022 |
| URL | https://stevegarrettguitar.com/the-song-of-the-ice |
| Description | Twitter feed established and regularly updated for the BEAMISH Project's main fieldwork campaign |
| Form Of Engagement Activity | Engagement focused website, blog or social media channel |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Public/other audiences |
| Results and Impact | Twitter feed from the Antarctic fieldwork (#hotwateronice) proved highly effective. Responses very positive. Currently has more than 1300 followers. |
| Year(s) Of Engagement Activity | 2018,2019 |
| URL | https://twitter.com/hotwateronice?lang=en |
| Description | Written and phone responses for news article. |
| Form Of Engagement Activity | A press release, press conference or response to a media enquiry/interview |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Public/other audiences |
| Results and Impact | Written and phone responses for news article.Newsweek |
| Year(s) Of Engagement Activity | 2020 |
| Description | Written response for newspaper article |
| Form Of Engagement Activity | A press release, press conference or response to a media enquiry/interview |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Public/other audiences |
| Results and Impact | Written responses for newspaper article, the Strait Times, Singapore |
| Year(s) Of Engagement Activity | 2020 |
| Description | Written responses for news article. |
| Form Of Engagement Activity | A press release, press conference or response to a media enquiry/interview |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Public/other audiences |
| Results and Impact | Written and phone responses for news article. New Scientist |
| Year(s) Of Engagement Activity | 2020 |
| Description | iSTAR Final Meeting |
| Form Of Engagement Activity | Participation in an activity, workshop or similar |
| Part Of Official Scheme? | No |
| Geographic Reach | National |
| Primary Audience | Other audiences |
| Results and Impact | Presented project data and results relating to regional accumulation rate to audience interested in the potential loss of mass balance/sea level change from the West Antarctic Ice Sheet. |
| Year(s) Of Engagement Activity | 2017 |