A community-based geological reconstruction of Antarctic Ice Sheet deglaciation since the Last Glacial Maximum
A robust understanding of Antarctic Ice Sheet deglacial history since the Last Glacial Maximum is important in order to constrain ice sheet and glacial-isostatic adjustment models, and to explore the forcing mechanisms responsible for ice sheet retreat. Such understanding can be derived from a broad...
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ftunivbern:oai:boris.unibe.ch:61476 2023-08-20T04:01:53+02:00 A community-based geological reconstruction of Antarctic Ice Sheet deglaciation since the Last Glacial Maximum The RAISED, Consortium Saunders, Krystyna 2014-09 application/pdf https://boris.unibe.ch/61476/1/1-s2.0-S0277379114002546-main.pdf https://boris.unibe.ch/61476/ eng eng Pergamon https://boris.unibe.ch/61476/ info:eu-repo/semantics/openAccess The RAISED, Consortium; Saunders, Krystyna (2014). A community-based geological reconstruction of Antarctic Ice Sheet deglaciation since the Last Glacial Maximum. Quaternary Science Reviews, 100, pp. 1-9. Pergamon 10.1016/j.quascirev.2014.06.025 <http://dx.doi.org/10.1016/j.quascirev.2014.06.025> 550 Earth sciences & geology 910 Geography & travel info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion PeerReviewed 2014 ftunivbern https://doi.org/10.1016/j.quascirev.2014.06.025 2023-07-31T21:13:02Z A robust understanding of Antarctic Ice Sheet deglacial history since the Last Glacial Maximum is important in order to constrain ice sheet and glacial-isostatic adjustment models, and to explore the forcing mechanisms responsible for ice sheet retreat. Such understanding can be derived from a broad range of geological and glaciological datasets and recent decades have seen an upsurge in such data gathering around the continent and Sub-Antarctic islands. Here, we report a new synthesis of those datasets, based on an accompanying series of reviews of the geological data, organised by sector. We present a series of timeslice maps for 20 ka, 15 ka, 10 ka and 5 ka, including grounding line position and ice sheet thickness changes, along with a clear assessment of levels of confidence. The reconstruction shows that the Antarctic Ice sheet did not everywhere reach the continental shelf edge at its maximum, that initial retreat was asynchronous, and that the spatial pattern of deglaciation was highly variable, particularly on the inner shelf. The deglacial reconstruction is consistent with a moderate overall excess ice volume and with a relatively small Antarctic contribution to meltwater pulse 1a. We discuss key areas of uncertainty both around the continent and by time interval, and we highlight potential priorities for future work. The synthesis is intended to be a resource for the modelling and glacial geological community. Article in Journal/Newspaper Antarc* Antarctic Ice Sheet BORIS (Bern Open Repository and Information System, University of Bern) Antarctic The Antarctic Quaternary Science Reviews 100 1 9 |
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Open Polar |
collection |
BORIS (Bern Open Repository and Information System, University of Bern) |
op_collection_id |
ftunivbern |
language |
English |
topic |
550 Earth sciences & geology 910 Geography & travel |
spellingShingle |
550 Earth sciences & geology 910 Geography & travel The RAISED, Consortium Saunders, Krystyna A community-based geological reconstruction of Antarctic Ice Sheet deglaciation since the Last Glacial Maximum |
topic_facet |
550 Earth sciences & geology 910 Geography & travel |
description |
A robust understanding of Antarctic Ice Sheet deglacial history since the Last Glacial Maximum is important in order to constrain ice sheet and glacial-isostatic adjustment models, and to explore the forcing mechanisms responsible for ice sheet retreat. Such understanding can be derived from a broad range of geological and glaciological datasets and recent decades have seen an upsurge in such data gathering around the continent and Sub-Antarctic islands. Here, we report a new synthesis of those datasets, based on an accompanying series of reviews of the geological data, organised by sector. We present a series of timeslice maps for 20 ka, 15 ka, 10 ka and 5 ka, including grounding line position and ice sheet thickness changes, along with a clear assessment of levels of confidence. The reconstruction shows that the Antarctic Ice sheet did not everywhere reach the continental shelf edge at its maximum, that initial retreat was asynchronous, and that the spatial pattern of deglaciation was highly variable, particularly on the inner shelf. The deglacial reconstruction is consistent with a moderate overall excess ice volume and with a relatively small Antarctic contribution to meltwater pulse 1a. We discuss key areas of uncertainty both around the continent and by time interval, and we highlight potential priorities for future work. The synthesis is intended to be a resource for the modelling and glacial geological community. |
format |
Article in Journal/Newspaper |
author |
The RAISED, Consortium Saunders, Krystyna |
author_facet |
The RAISED, Consortium Saunders, Krystyna |
author_sort |
The RAISED, Consortium |
title |
A community-based geological reconstruction of Antarctic Ice Sheet deglaciation since the Last Glacial Maximum |
title_short |
A community-based geological reconstruction of Antarctic Ice Sheet deglaciation since the Last Glacial Maximum |
title_full |
A community-based geological reconstruction of Antarctic Ice Sheet deglaciation since the Last Glacial Maximum |
title_fullStr |
A community-based geological reconstruction of Antarctic Ice Sheet deglaciation since the Last Glacial Maximum |
title_full_unstemmed |
A community-based geological reconstruction of Antarctic Ice Sheet deglaciation since the Last Glacial Maximum |
title_sort |
community-based geological reconstruction of antarctic ice sheet deglaciation since the last glacial maximum |
publisher |
Pergamon |
publishDate |
2014 |
url |
https://boris.unibe.ch/61476/1/1-s2.0-S0277379114002546-main.pdf https://boris.unibe.ch/61476/ |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Ice Sheet |
genre_facet |
Antarc* Antarctic Ice Sheet |
op_source |
The RAISED, Consortium; Saunders, Krystyna (2014). A community-based geological reconstruction of Antarctic Ice Sheet deglaciation since the Last Glacial Maximum. Quaternary Science Reviews, 100, pp. 1-9. Pergamon 10.1016/j.quascirev.2014.06.025 <http://dx.doi.org/10.1016/j.quascirev.2014.06.025> |
op_relation |
https://boris.unibe.ch/61476/ |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.quascirev.2014.06.025 |
container_title |
Quaternary Science Reviews |
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100 |
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1 |
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9 |
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1774712253278322688 |