Ocean micronutrient cycles: UK GEOTRACES
Lead Research Organisation:
Imperial College London
Department Name: Earth Science and Engineering
Abstract
See lead institute submission.
Publications
Paul M
(2015)
High-precision measurements of seawater Pb isotope compositions by double spike thermal ionization mass spectrometry.
in Analytica chimica acta
Xue Z
(2012)
A new methodology for precise cadmium isotope analyses of seawater.
in Analytical and bioanalytical chemistry
Gioia S
(2017)
An isotopic study of atmospheric lead in a megacity after phasing out of leaded gasoline
in Atmospheric Environment
Mondillo N
(2018)
A global assessment of Zn isotope fractionation in secondary Zn minerals from sulfide and non-sulfide ore deposits and model for fractionation control
in Chemical Geology
Schlitzer R
(2018)
The GEOTRACES Intermediate Data Product 2017
in Chemical Geology
Crocket K
(2014)
Measurement of fossil deep-sea coral Nd isotopic compositions and concentrations by TIMS as NdO+, with evaluation of cleaning protocols
in Chemical Geology
Lambelet M
(2013)
Isotopic analysis of Cd in the mixing zone of Siberian rivers with the Arctic Ocean-New constraints on marine Cd cycling and the isotope composition of riverine Cd
in Earth and Planetary Science Letters
Xie R
(2019)
Isotopic evidence for complex biogeochemical cycling of Cd in the eastern tropical South Pacific
in Earth and Planetary Science Letters
| Description | This project has facilitated the analytical development work to perform the first precise and accurate lead isotope analyses in seawater and to produce the first high quality data set for trace and major elements in aerosols in the Southern Atlantic Ocean (SAO). Such measurements are only performed by a few laboratories world-wide, but hold the potential for unprecedented insights (i) in tracking anthropogenic lead and using it as an tracer for water mass exchange and movement in the ocean and (ii) into the sources of micronutrients into the SAO. A paper detailing the results has been published in 2015 (Paul et al., Anal Chim Acta, 2015) Samples from depth profiles and surface seawater along the UK GEOTRACES 40S transect in the South Atlantic have been successfully analysed and results are currently being written up for publication. A first paper on the has now been published (2015) where we show that lead isotopes successfully identify the transport of water masses from the Indian Ocean to the Atlantic Ocean through the Aghuelas Current - that is a very important finding with respect to trace element dynamics in the ocean. (Paul et al., Geophys Res Letters, 2015) Work on aerosol samples collected from the same cruise is in progress and will upon completion complement the seawater analysis by providing additional constraints on sources of anthropogenic and natural Pb to the South Atlantic. In the meantime, the geochemical characterisation of the source region samples has been completed and published (Kondokher et al, Chemie der Erde, 2018) |
| Exploitation Route | The Pb isotope data established for the Southern Atlantic Ocean is currently used by physical oceanographers to develop the first model for Pb circulation in the world oceans. A proposal has also been submitted by Rehkamper and van de Flierdt. The analytical methods implemented during the project are used by the various investigators for developing their research portfolio. PI Weiss has set up a air monitoring system in the Amazon forest with follow up funding from the EU Co-I Rehkamper has developed his research into the dynamics of nanoparticles in collaboration with a wide range of scientists (biologists, toxicologists) Co-I van de Flierdt has been developing work into nuclear forensics and is a key part of the Pb modeling efforts The Geotraces Programm has also led to further work into the ocean chemistry of trace elements such as As, Sb, Cd, Zn by the three investigators |
| Sectors | Environment |
| URL | http://www.ukgeotraces.com |
| Description | The data produced in our work (trace elements and Pb isotope data in aerosols and sea water from the South Atlantic Ocean) were used in the GEOTRACERS data product which forms the basis for future scientific publications (data is available to other researchers). The data product has been published The GEOTRACES intermediate data product 2017, Chemical Geology 493, 210-223 This data compilation is unique and the first ever that provides a chemical reference data set and a baseline data set for policy makers How it used besides the research community we will see - but the research community has cited that compilation already 21 times in March 2019 |
| First Year Of Impact | 2017 |
| Sector | Environment |
| Impact Types | Societal,Economic,Policy & public services |
| Description | RS Meeting of Young Scientists between Australia and the United Kingdom |
| Geographic Reach | Multiple continents/international |
| Policy Influence Type | Contribution to a national consultation/review |
| Description | CLIM AMAZON |
| Amount | £90,000 (GBP) |
| Funding ID | 295091 |
| Organisation | European Research Council (ERC) |
| Sector | Public |
| Country | Belgium |
| Start | 11/2012 |
| End | 10/2015 |
| Description | PhD scholarship from Islamic Development Bank |
| Amount | £70,000 (GBP) |
| Organisation | Islamic Development Bank (IDB) |
| Sector | Private |
| Country | Saudi Arabia |
| Start | 03/2017 |
| End | 02/2021 |
| Description | Revisiting the Neodymium Paradox |
| Amount | £365,608 (GBP) |
| Funding ID | NE/J021636/1 |
| Organisation | Natural Environment Research Council |
| Sector | Public |
| Country | United Kingdom |
| Start | 09/2012 |
| End | 03/2017 |
| Description | SOUTHERNCHANGE |
| Amount | £180,000 (GBP) |
| Funding ID | 702916 |
| Organisation | European Research Council (ERC) |
| Sector | Public |
| Country | Belgium |
| Start | 10/2016 |
| End | 09/2018 |
| Title | Geotraces Data base |
| Description | Data base for geotraces data bank |
| Type Of Material | Database/Collection of data |
| Year Produced | 2016 |
| Provided To Others? | Yes |
| Impact | this data is now used to develop a Pb ocean model |
| URL | http://www.bodc.ac.uk/geotraces/ |
| Description | UK Geotracers Consortium |
| Organisation | University of East Anglia |
| Department | School of Environmental Sciences UEA |
| Country | United Kingdom |
| Sector | Academic/University |
| PI Contribution | work on work package 4 |
| Collaborator Contribution | consortium partners |
| Impact | papers further funding |
| Start Year | 2010 |
| Description | UK Geotracers Consortium |
| Organisation | University of Oxford |
| Department | Department of Earth Sciences |
| Country | United Kingdom |
| Sector | Academic/University |
| PI Contribution | work on work package 4 |
| Collaborator Contribution | consortium partners |
| Impact | papers further funding |
| Start Year | 2010 |
| Title | Basin Change point Model |
| Description | application for change point modeling in geological data sets |
| Type Of Technology | Software |
| Year Produced | 2011 |
| Open Source License? | Yes |
| Impact | change point modeling is now widely used in the peat archive community |
| URL | http://www.iearth.org.au/codes/ |
| Title | High precision Pb isotope measurements |
| Description | double spike for high precision isotope ratio measurements |
| Type Of Technology | New/Improved Technique/Technology |
| Year Produced | 2015 |
| Impact | improvement of precision and accuracy of Pb isotope measurements in seawater |
| Description | Insights into improved provenance tracing using Pb isotopic ratios of aerosols into the South Atlantic Ocean |
| Form Of Engagement Activity | A formal working group, expert panel or dialogue |
| Part Of Official Scheme? | No |
| Geographic Reach | Local |
| Primary Audience | Professional Practitioners |
| Results and Impact | Talk presented by Roulin Khondoker, who works on the tied studentship project of the grant for her PhD. The talk was presented at the 'Research in progress' meeting organised by the Geochemistry section of the Geological Society at the Open University in March 2013. |
| Year(s) Of Engagement Activity | 2013 |
| Description | Lead isotopes in South Atlantic seawater: insights on anthropogenic inputs and ocean circulation |
| Form Of Engagement Activity | A talk or presentation |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Professional Practitioners |
| Results and Impact | Goldschmidt conference 2012, abstract for poster presentation by Maxence Paul (PDRA on the project) |
| Year(s) Of Engagement Activity | 2012 |
| Description | Lead isotopes in South Atlantic seawater: insights on anthropogenic inputs and ocean circulation from the UK GEOTRACES transect along 40°S |
| Form Of Engagement Activity | A talk or presentation |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Postgraduate students |
| Results and Impact | Poster presentation at the Challenger Conference 2012 in Norwich, East Anglia by Maxence Paul (PDRA on the projec). |
| Year(s) Of Engagement Activity | 2012 |
| Description | Ocean Chemistry: Now and Then |
| Form Of Engagement Activity | Participation in an open day or visit at my research institution |
| Part Of Official Scheme? | No |
| Geographic Reach | Local |
| Primary Audience | Policymakers/politicians |
| Results and Impact | Invited talk at a one day symposium on ocean research at Imperial College London, organised to stimulate UK collaborations in ocean research. |
| Year(s) Of Engagement Activity | 2012 |
| Description | Ocean chemistry as a mediator in the dialogue between geology and oceanography ? |
| Form Of Engagement Activity | A talk or presentation |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Professional Practitioners |
| Results and Impact | Invited talk at an INQUA AND IGBP sponsored workshop on contourites, Hull, 2013. |
| Year(s) Of Engagement Activity | 2013 |
| Description | Why measuring isotope ratios on every single GEOTRACES cruise? |
| Form Of Engagement Activity | A talk or presentation |
| Part Of Official Scheme? | Yes |
| Geographic Reach | International |
| Primary Audience | Professional Practitioners |
| Results and Impact | Plenary talk at the 'Frontiers of Science' meeting 2010 in Perth, Australia. 'Frontiers of Science' is a series of prestigious international meetings for outstanding early career scientists, organised by the Royal Society in conjunction with other national academies. These meetings bring together future leaders to encourage innovative science and international and cross-disciplinary collaboration. I highlighted the value of isotope work within the context of the international GEOTRACES program, as well as the ongoing UK activities. |
| Year(s) Of Engagement Activity | 2010 |
| Description | |
| Form Of Engagement Activity | |
| Part Of Official Scheme? | No |
| Primary Audience | |
| Year(s) Of Engagement Activity | |