Limited Retreat of the Wilkes Basin Ice Sheet During the Last Interglacial
The response of the East Antarctic Ice Sheet to global warming represents a major source of uncertainty in sea‐level projections. Thinning of the East Antarctic George V and Sabrina Coast ice cover is currently taking place, and regional ice‐sheet instability episodes might have been triggered in pa...
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American Geophysical Union
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Online Access: | https://boris.unibe.ch/145233/1/sutter20grl_wilkesicestreamtalosdome.pdf https://boris.unibe.ch/145233/ |
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ftunivbern:oai:boris.unibe.ch:145233 2023-08-20T04:02:01+02:00 Limited Retreat of the Wilkes Basin Ice Sheet During the Last Interglacial Sutter, J. Eisen, O. Werner, M. Grosfeld, K. Kleiner, T. Fischer, H. 2020 application/pdf https://boris.unibe.ch/145233/1/sutter20grl_wilkesicestreamtalosdome.pdf https://boris.unibe.ch/145233/ eng eng American Geophysical Union https://boris.unibe.ch/145233/ info:eu-repo/semantics/openAccess Sutter, J.; Eisen, O.; Werner, M.; Grosfeld, K.; Kleiner, T.; Fischer, H. (2020). Limited Retreat of the Wilkes Basin Ice Sheet During the Last Interglacial. Geophysical Research Letters, 47(13) American Geophysical Union 10.1029/2020GL088131 <http://dx.doi.org/10.1029/2020GL088131> 530 Physics info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion PeerReviewed 2020 ftunivbern https://doi.org/10.1029/2020GL088131 2023-07-31T22:00:47Z The response of the East Antarctic Ice Sheet to global warming represents a major source of uncertainty in sea‐level projections. Thinning of the East Antarctic George V and Sabrina Coast ice cover is currently taking place, and regional ice‐sheet instability episodes might have been triggered in past warm climates. However, the magnitude of ice retreat in the past cannot yet be quantitatively derived from paleo‐proxy records alone. We propose that a runaway retreat of the George V coast grounding line and subsequent instability of the Wilkes Basin ice sheet would either leave a clear imprint on the water isotope composition in the Talos Dome region or prohibit a Talos Dome ice‐core record from the Last Interglacial altogether. Testing this hypothesis, our ice‐sheet model simulations suggest that Wilkes Basin ice‐sheet retreat remained relatively limited during the Last Interglacial and provide a constraint on Last Interglacial East Antarctic grounding line stability. Article in Journal/Newspaper Antarc* Antarctic ice core Ice Sheet BORIS (Bern Open Repository and Information System, University of Bern) Antarctic East Antarctic Ice Sheet Talos Dome ENVELOPE(158.000,158.000,-73.000,-73.000) George V Coast ENVELOPE(147.000,147.000,-69.000,-69.000) Sabrina Coast ENVELOPE(118.550,118.550,-67.000,-67.000) Geophysical Research Letters 47 13 |
institution |
Open Polar |
collection |
BORIS (Bern Open Repository and Information System, University of Bern) |
op_collection_id |
ftunivbern |
language |
English |
topic |
530 Physics |
spellingShingle |
530 Physics Sutter, J. Eisen, O. Werner, M. Grosfeld, K. Kleiner, T. Fischer, H. Limited Retreat of the Wilkes Basin Ice Sheet During the Last Interglacial |
topic_facet |
530 Physics |
description |
The response of the East Antarctic Ice Sheet to global warming represents a major source of uncertainty in sea‐level projections. Thinning of the East Antarctic George V and Sabrina Coast ice cover is currently taking place, and regional ice‐sheet instability episodes might have been triggered in past warm climates. However, the magnitude of ice retreat in the past cannot yet be quantitatively derived from paleo‐proxy records alone. We propose that a runaway retreat of the George V coast grounding line and subsequent instability of the Wilkes Basin ice sheet would either leave a clear imprint on the water isotope composition in the Talos Dome region or prohibit a Talos Dome ice‐core record from the Last Interglacial altogether. Testing this hypothesis, our ice‐sheet model simulations suggest that Wilkes Basin ice‐sheet retreat remained relatively limited during the Last Interglacial and provide a constraint on Last Interglacial East Antarctic grounding line stability. |
format |
Article in Journal/Newspaper |
author |
Sutter, J. Eisen, O. Werner, M. Grosfeld, K. Kleiner, T. Fischer, H. |
author_facet |
Sutter, J. Eisen, O. Werner, M. Grosfeld, K. Kleiner, T. Fischer, H. |
author_sort |
Sutter, J. |
title |
Limited Retreat of the Wilkes Basin Ice Sheet During the Last Interglacial |
title_short |
Limited Retreat of the Wilkes Basin Ice Sheet During the Last Interglacial |
title_full |
Limited Retreat of the Wilkes Basin Ice Sheet During the Last Interglacial |
title_fullStr |
Limited Retreat of the Wilkes Basin Ice Sheet During the Last Interglacial |
title_full_unstemmed |
Limited Retreat of the Wilkes Basin Ice Sheet During the Last Interglacial |
title_sort |
limited retreat of the wilkes basin ice sheet during the last interglacial |
publisher |
American Geophysical Union |
publishDate |
2020 |
url |
https://boris.unibe.ch/145233/1/sutter20grl_wilkesicestreamtalosdome.pdf https://boris.unibe.ch/145233/ |
long_lat |
ENVELOPE(158.000,158.000,-73.000,-73.000) ENVELOPE(147.000,147.000,-69.000,-69.000) ENVELOPE(118.550,118.550,-67.000,-67.000) |
geographic |
Antarctic East Antarctic Ice Sheet Talos Dome George V Coast Sabrina Coast |
geographic_facet |
Antarctic East Antarctic Ice Sheet Talos Dome George V Coast Sabrina Coast |
genre |
Antarc* Antarctic ice core Ice Sheet |
genre_facet |
Antarc* Antarctic ice core Ice Sheet |
op_source |
Sutter, J.; Eisen, O.; Werner, M.; Grosfeld, K.; Kleiner, T.; Fischer, H. (2020). Limited Retreat of the Wilkes Basin Ice Sheet During the Last Interglacial. Geophysical Research Letters, 47(13) American Geophysical Union 10.1029/2020GL088131 <http://dx.doi.org/10.1029/2020GL088131> |
op_relation |
https://boris.unibe.ch/145233/ |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/2020GL088131 |
container_title |
Geophysical Research Letters |
container_volume |
47 |
container_issue |
13 |
_version_ |
1774712406736371712 |