Lake Suigetsu varved sediment project: terrestrial radiocarbon calibration model and inter-regional comparison of climate changes
Lead Research Organisation:
Aberystwyth University
Department Name: Inst of Geography and Earth Sciences
Abstract
Long term records of atmospheric radiocarbon provide a wealth of information, both as records of carbon cycling in the environment and as a basis for all 14C dating. The Holocene atmospheric radiocarbon record is provided by tree rings and is considered to be (almost) robust. However, that of the period from 12,410 to c.26,000 BP is based on marine sediments which are influenced by the marine reservoir effect. Also, the corresponding information for the atmosphere for the period 26,000 to 50,000 BP is lacking. This project will establish a radiocarbon calibration model for the Late Pleistocene (10,000 / 50,000 BP) based on terrestrial material, mostly deciduous tree leaf fossils which are free from marine reservoir effects, recovered from the annually laminated lacustrine sediments of Lake Suigetsu, Japan. The project will also produce quantitatively reconstructed climate changes of the Monsoon regions for the last 150,000 yeas using high or ultra-high resolution pollen records. The profile will be established using tie-points such as geomagnetic excursions and tephra layers. The project will therefore contribute to international scientific endeavour in using radiocarbon-based information to determine the timing and rates of environmental changes, as well as understanding past changes in the global carbon cycle. The project will also contribute to hypothesis testing about the causal mechanisms of climate change, especially concerning the relative timing of D/O events in Asia, North Atlantic, Antarctica and many other marine and terrestrial records through the last glacial-interglacial cycle.
Organisations
People |
ORCID iD |
Henry Lamb (Principal Investigator) |
Publications
Trauth M
(2018)
Abrupt or gradual? Change point analysis of the late Pleistocene-Holocene climate record from Chew Bahir, southern Ethiopia
in Quaternary Research
Viehberg F
(2018)
Environmental change during MIS4 and MIS 3 opened corridors in the Horn of Africa for Homo sapiens expansion
in Quaternary Science Reviews
Roberts H
(2018)
Generating long chronologies for lacustrine sediments using luminescence dating: a 250,000 year record from Lake Tana, Ethiopia
in Quaternary Science Reviews
Lamb HF
(2018)
Author Correction: 150,000-year palaeoclimate record from northern Ethiopia supports early, multiple dispersals of modern humans from Africa.
in Scientific reports
Schlolaut G
(2018)
An extended and revised Lake Suigetsu varve chronology from ~50 to ~10 ka BP based on detailed sediment micro-facies analyses
in Quaternary Science Reviews
Loakes K
(2018)
Late Quaternary climate change in the north-eastern highlands of Ethiopia: A high resolution 15,600 year diatom and pigment record from Lake Hayk
in Quaternary Science Reviews
Blinkhorn J
(2018)
The structure of the Middle Stone Age of eastern Africa
in Quaternary Science Reviews
Martin Trauth
(2018)
Abrupt or Gradual? Change Point Analysis of the Late Pleistocene-Holocene Chew Bahir Record from Southern Ethiopia
in Quaternary Research
Gil-Romera G
(2019)
Long-term fire resilience of the Ericaceous Belt, Bale Mountains, Ethiopia.
in Biology letters
Grove M
(2020)
Neural networks differentiate between Middle and Later Stone Age lithic assemblages in eastern Africa.
in PloS one
Description | Extended the terrestrial radiocarbon calibration to 40,000 yrs ago |
Exploitation Route | In dating ancient organic materials with radiocabon |
Sectors | Environment,Culture, Heritage, Museums and Collections |
URL | http://www.suigetsu.org/embed.php?File= |
Description | Contribution to museum exhibits in Japan: major new varve museum at Wakasa, Japan |
First Year Of Impact | 2018 |
Sector | Environment,Culture, Heritage, Museums and Collections |
Impact Types | Cultural |