Multiple episodes of ice loss from the Wilkes Subglacial Basin during the Last Interglacial

The Last Interglacial (LIG: 130,000–115,000 years ago) was a period of warmer global mean temperatures and higher and more variable sea levels than the Holocene (11,700–0 years ago). Therefore, a better understanding of Antarctic ice-sheet dynamics during this interval would provide valuable insight...

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Autores principales: Iizuka, Mutsumi, Seki, Osamu, Wilson, David J., Suganuma, Yusuke, Horikawa, Keiji, van de Flierdt, Tina, Ikehara, Minoru, Itaki, Takuya, Irino, Tomohisa, Yamamoto, Masanobu, Hirabayashi, Motohiro, Matsuzaki, Hiroyuki, Sugisaki, Saiko
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2023
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Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10113383/
https://www.ncbi.nlm.nih.gov/pubmed/37072396
http://dx.doi.org/10.1038/s41467-023-37325-y
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author Iizuka, Mutsumi
Seki, Osamu
Wilson, David J.
Suganuma, Yusuke
Horikawa, Keiji
van de Flierdt, Tina
Ikehara, Minoru
Itaki, Takuya
Irino, Tomohisa
Yamamoto, Masanobu
Hirabayashi, Motohiro
Matsuzaki, Hiroyuki
Sugisaki, Saiko
author_facet Iizuka, Mutsumi
Seki, Osamu
Wilson, David J.
Suganuma, Yusuke
Horikawa, Keiji
van de Flierdt, Tina
Ikehara, Minoru
Itaki, Takuya
Irino, Tomohisa
Yamamoto, Masanobu
Hirabayashi, Motohiro
Matsuzaki, Hiroyuki
Sugisaki, Saiko
author_sort Iizuka, Mutsumi
collection PubMed
description The Last Interglacial (LIG: 130,000–115,000 years ago) was a period of warmer global mean temperatures and higher and more variable sea levels than the Holocene (11,700–0 years ago). Therefore, a better understanding of Antarctic ice-sheet dynamics during this interval would provide valuable insights for projecting sea-level change in future warming scenarios. Here we present a high-resolution record constraining ice-sheet changes in the Wilkes Subglacial Basin (WSB) of East Antarctica during the LIG, based on analysis of sediment provenance and an ice melt proxy in a marine sediment core retrieved from the Wilkes Land margin. Our sedimentary records, together with existing ice-core records, reveal dynamic fluctuations of the ice sheet in the WSB, with thinning, melting, and potentially retreat leading to ice loss during both early and late stages of the LIG. We suggest that such changes along the East Antarctic Ice Sheet margin may have contributed to fluctuating global sea levels during the LIG.
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spelling pubmed-101133832023-04-20 Multiple episodes of ice loss from the Wilkes Subglacial Basin during the Last Interglacial Iizuka, Mutsumi Seki, Osamu Wilson, David J. Suganuma, Yusuke Horikawa, Keiji van de Flierdt, Tina Ikehara, Minoru Itaki, Takuya Irino, Tomohisa Yamamoto, Masanobu Hirabayashi, Motohiro Matsuzaki, Hiroyuki Sugisaki, Saiko Nat Commun Article The Last Interglacial (LIG: 130,000–115,000 years ago) was a period of warmer global mean temperatures and higher and more variable sea levels than the Holocene (11,700–0 years ago). Therefore, a better understanding of Antarctic ice-sheet dynamics during this interval would provide valuable insights for projecting sea-level change in future warming scenarios. Here we present a high-resolution record constraining ice-sheet changes in the Wilkes Subglacial Basin (WSB) of East Antarctica during the LIG, based on analysis of sediment provenance and an ice melt proxy in a marine sediment core retrieved from the Wilkes Land margin. Our sedimentary records, together with existing ice-core records, reveal dynamic fluctuations of the ice sheet in the WSB, with thinning, melting, and potentially retreat leading to ice loss during both early and late stages of the LIG. We suggest that such changes along the East Antarctic Ice Sheet margin may have contributed to fluctuating global sea levels during the LIG. Nature Publishing Group UK 2023-04-18 /pmc/articles/PMC10113383/ /pubmed/37072396 http://dx.doi.org/10.1038/s41467-023-37325-y Text en © The Author(s) 2023 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
Iizuka, Mutsumi
Seki, Osamu
Wilson, David J.
Suganuma, Yusuke
Horikawa, Keiji
van de Flierdt, Tina
Ikehara, Minoru
Itaki, Takuya
Irino, Tomohisa
Yamamoto, Masanobu
Hirabayashi, Motohiro
Matsuzaki, Hiroyuki
Sugisaki, Saiko
Multiple episodes of ice loss from the Wilkes Subglacial Basin during the Last Interglacial
title Multiple episodes of ice loss from the Wilkes Subglacial Basin during the Last Interglacial
title_full Multiple episodes of ice loss from the Wilkes Subglacial Basin during the Last Interglacial
title_fullStr Multiple episodes of ice loss from the Wilkes Subglacial Basin during the Last Interglacial
title_full_unstemmed Multiple episodes of ice loss from the Wilkes Subglacial Basin during the Last Interglacial
title_short Multiple episodes of ice loss from the Wilkes Subglacial Basin during the Last Interglacial
title_sort multiple episodes of ice loss from the wilkes subglacial basin during the last interglacial
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10113383/
https://www.ncbi.nlm.nih.gov/pubmed/37072396
http://dx.doi.org/10.1038/s41467-023-37325-y
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