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Wilkes subglacial basin ice sheet response to Southern Ocean warming during late Pleistocene interglacials

The response of the East Antarctic Ice Sheet to past intervals of oceanic and atmospheric warming is still not well constrained but is critical for understanding both past and future sea-level change. Furthermore, the ice sheet in the Wilkes Subglacial Basin appears to have undergone thinning and ic...

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Autores principales: Crotti, Ilaria, Quiquet, Aurélien, Landais, Amaelle, Stenni, Barbara, Wilson, David J., Severi, Mirko, Mulvaney, Robert, Wilhelms, Frank, Barbante, Carlo, Frezzotti, Massimo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9464198/
https://www.ncbi.nlm.nih.gov/pubmed/36088458
http://dx.doi.org/10.1038/s41467-022-32847-3
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author Crotti, Ilaria
Quiquet, Aurélien
Landais, Amaelle
Stenni, Barbara
Wilson, David J.
Severi, Mirko
Mulvaney, Robert
Wilhelms, Frank
Barbante, Carlo
Frezzotti, Massimo
author_facet Crotti, Ilaria
Quiquet, Aurélien
Landais, Amaelle
Stenni, Barbara
Wilson, David J.
Severi, Mirko
Mulvaney, Robert
Wilhelms, Frank
Barbante, Carlo
Frezzotti, Massimo
author_sort Crotti, Ilaria
collection PubMed
description The response of the East Antarctic Ice Sheet to past intervals of oceanic and atmospheric warming is still not well constrained but is critical for understanding both past and future sea-level change. Furthermore, the ice sheet in the Wilkes Subglacial Basin appears to have undergone thinning and ice discharge events during recent decades. Here we combine glaciological evidence on ice sheet elevation from the TALDICE ice core with offshore sedimentological records and ice sheet modelling experiments to reconstruct the ice dynamics in the Wilkes Subglacial Basin over the past 350,000 years. Our results indicate that the Wilkes Subglacial Basin experienced an extensive retreat 330,000 years ago and a more limited retreat 125,000 years ago. These changes coincide with warmer Southern Ocean temperatures and elevated global mean sea level during those interglacial periods, confirming the sensitivity of the Wilkes Subglacial Basin ice sheet to ocean warming and its potential role in sea-level change.
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spelling pubmed-94641982022-09-12 Wilkes subglacial basin ice sheet response to Southern Ocean warming during late Pleistocene interglacials Crotti, Ilaria Quiquet, Aurélien Landais, Amaelle Stenni, Barbara Wilson, David J. Severi, Mirko Mulvaney, Robert Wilhelms, Frank Barbante, Carlo Frezzotti, Massimo Nat Commun Article The response of the East Antarctic Ice Sheet to past intervals of oceanic and atmospheric warming is still not well constrained but is critical for understanding both past and future sea-level change. Furthermore, the ice sheet in the Wilkes Subglacial Basin appears to have undergone thinning and ice discharge events during recent decades. Here we combine glaciological evidence on ice sheet elevation from the TALDICE ice core with offshore sedimentological records and ice sheet modelling experiments to reconstruct the ice dynamics in the Wilkes Subglacial Basin over the past 350,000 years. Our results indicate that the Wilkes Subglacial Basin experienced an extensive retreat 330,000 years ago and a more limited retreat 125,000 years ago. These changes coincide with warmer Southern Ocean temperatures and elevated global mean sea level during those interglacial periods, confirming the sensitivity of the Wilkes Subglacial Basin ice sheet to ocean warming and its potential role in sea-level change. Nature Publishing Group UK 2022-09-10 /pmc/articles/PMC9464198/ /pubmed/36088458 http://dx.doi.org/10.1038/s41467-022-32847-3 Text en © The Author(s) 2022, corrected publication 2022 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Crotti, Ilaria
Quiquet, Aurélien
Landais, Amaelle
Stenni, Barbara
Wilson, David J.
Severi, Mirko
Mulvaney, Robert
Wilhelms, Frank
Barbante, Carlo
Frezzotti, Massimo
Wilkes subglacial basin ice sheet response to Southern Ocean warming during late Pleistocene interglacials
title Wilkes subglacial basin ice sheet response to Southern Ocean warming during late Pleistocene interglacials
title_full Wilkes subglacial basin ice sheet response to Southern Ocean warming during late Pleistocene interglacials
title_fullStr Wilkes subglacial basin ice sheet response to Southern Ocean warming during late Pleistocene interglacials
title_full_unstemmed Wilkes subglacial basin ice sheet response to Southern Ocean warming during late Pleistocene interglacials
title_short Wilkes subglacial basin ice sheet response to Southern Ocean warming during late Pleistocene interglacials
title_sort wilkes subglacial basin ice sheet response to southern ocean warming during late pleistocene interglacials
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9464198/
https://www.ncbi.nlm.nih.gov/pubmed/36088458
http://dx.doi.org/10.1038/s41467-022-32847-3
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