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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2022
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ftucl:oai:eprints.ucl.ac.uk.OAI2:10155474 2023-12-24T10:11:31+01:00 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 2022-09-10 application/pdf https://discovery.ucl.ac.uk/id/eprint/10155474/1/Crotti%20et%20al%202022%20Nat%20Coms%20%2B%20supp.pdf https://discovery.ucl.ac.uk/id/eprint/10155474/ eng eng Springer Science and Business Media LLC https://discovery.ucl.ac.uk/id/eprint/10155474/1/Crotti%20et%20al%202022%20Nat%20Coms%20%2B%20supp.pdf https://discovery.ucl.ac.uk/id/eprint/10155474/ open Nature Communications , 13 , Article 5328. (2022) (In press). Article 2022 ftucl 2023-11-27T13:07:28Z 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. Article in Journal/Newspaper Antarc* Antarctic ice core Ice Sheet Southern Ocean University College London: UCL Discovery Antarctic Southern Ocean East Antarctic Ice Sheet Wilkes Subglacial Basin ENVELOPE(145.000,145.000,-75.000,-75.000) |
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Open Polar |
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University College London: UCL Discovery |
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ftucl |
language |
English |
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. |
format |
Article in Journal/Newspaper |
author |
Crotti, Ilaria Quiquet, Aurélien Landais, Amaelle Stenni, Barbara Wilson, David J Severi, Mirko Mulvaney, Robert Wilhelms, Frank Barbante, Carlo Frezzotti, Massimo |
spellingShingle |
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 |
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 |
title |
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_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_sort |
wilkes subglacial basin ice sheet response to southern ocean warming during late pleistocene interglacials |
publisher |
Springer Science and Business Media LLC |
publishDate |
2022 |
url |
https://discovery.ucl.ac.uk/id/eprint/10155474/1/Crotti%20et%20al%202022%20Nat%20Coms%20%2B%20supp.pdf https://discovery.ucl.ac.uk/id/eprint/10155474/ |
long_lat |
ENVELOPE(145.000,145.000,-75.000,-75.000) |
geographic |
Antarctic Southern Ocean East Antarctic Ice Sheet Wilkes Subglacial Basin |
geographic_facet |
Antarctic Southern Ocean East Antarctic Ice Sheet Wilkes Subglacial Basin |
genre |
Antarc* Antarctic ice core Ice Sheet Southern Ocean |
genre_facet |
Antarc* Antarctic ice core Ice Sheet Southern Ocean |
op_source |
Nature Communications , 13 , Article 5328. (2022) (In press). |
op_relation |
https://discovery.ucl.ac.uk/id/eprint/10155474/1/Crotti%20et%20al%202022%20Nat%20Coms%20%2B%20supp.pdf https://discovery.ucl.ac.uk/id/eprint/10155474/ |
op_rights |
open |
_version_ |
1786166246497058816 |