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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Published in:Nature Communications
Main Authors: Iizuka, M, Seki, O, Wilson, DJ, Suganuma, Y, Horikawa, K, Van de Flierdt, T, Ikehara, M, Itaki, T, Irino, T, Yamamoto, M, Hirabayashi, M, Matsuzaki, H, Sugisaki, S
Format: Article in Journal/Newspaper
Language:English
Published: Nature Portfolio 2023
Subjects:
Antarctic
East Antarctic Ice Sheet
East Antarctica
Wilkes Land
Wilkes Subglacial Basin
Antarc*
Antarctica
ice core
Ice Sheet
Online Access:http://hdl.handle.net/10044/1/103508
https://doi.org/10.1038/s41467-023-37325-y
id ftimperialcol:oai:spiral.imperial.ac.uk:10044/1/103508
record_format openpolar
spelling ftimperialcol:oai:spiral.imperial.ac.uk:10044/1/103508 2023-06-11T04:04:33+02:00 Multiple episodes of ice loss from the Wilkes Subglacial Basin during the Last Interglacial Iizuka, M Seki, O Wilson, DJ Suganuma, Y Horikawa, K Van de Flierdt, T Ikehara, M Itaki, T Irino, T Yamamoto, M Hirabayashi, M Matsuzaki, H Sugisaki, S 2023-03-10 http://hdl.handle.net/10044/1/103508 https://doi.org/10.1038/s41467-023-37325-y eng eng Nature Portfolio Nature Communications 2041-1723 http://hdl.handle.net/10044/1/103508 doi:10.1038/s41467-023-37325-y © The Author(s) 2023 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/ 10 1 Journal Article 2023 ftimperialcol https://doi.org/10.1038/s41467-023-37325-y 2023-04-27T22:43:13Z 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. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica ice core Ice Sheet Wilkes Land Imperial College London: Spiral Antarctic East Antarctic Ice Sheet East Antarctica Wilkes Land ENVELOPE(120.000,120.000,-69.000,-69.000) Wilkes Subglacial Basin ENVELOPE(145.000,145.000,-75.000,-75.000) Nature Communications 14 1
institution Open Polar
collection Imperial College London: Spiral
op_collection_id ftimperialcol
language English
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.
format Article in Journal/Newspaper
author Iizuka, M
Seki, O
Wilson, DJ
Suganuma, Y
Horikawa, K
Van de Flierdt, T
Ikehara, M
Itaki, T
Irino, T
Yamamoto, M
Hirabayashi, M
Matsuzaki, H
Sugisaki, S
spellingShingle Iizuka, M
Seki, O
Wilson, DJ
Suganuma, Y
Horikawa, K
Van de Flierdt, T
Ikehara, M
Itaki, T
Irino, T
Yamamoto, M
Hirabayashi, M
Matsuzaki, H
Sugisaki, S
Multiple episodes of ice loss from the Wilkes Subglacial Basin during the Last Interglacial
author_facet Iizuka, M
Seki, O
Wilson, DJ
Suganuma, Y
Horikawa, K
Van de Flierdt, T
Ikehara, M
Itaki, T
Irino, T
Yamamoto, M
Hirabayashi, M
Matsuzaki, H
Sugisaki, S
author_sort Iizuka, M
title 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_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_sort multiple episodes of ice loss from the wilkes subglacial basin during the last interglacial
publisher Nature Portfolio
publishDate 2023
url http://hdl.handle.net/10044/1/103508
https://doi.org/10.1038/s41467-023-37325-y
long_lat ENVELOPE(120.000,120.000,-69.000,-69.000)
ENVELOPE(145.000,145.000,-75.000,-75.000)
geographic Antarctic
East Antarctic Ice Sheet
East Antarctica
Wilkes Land
Wilkes Subglacial Basin
geographic_facet Antarctic
East Antarctic Ice Sheet
East Antarctica
Wilkes Land
Wilkes Subglacial Basin
genre Antarc*
Antarctic
Antarctica
East Antarctica
ice core
Ice Sheet
Wilkes Land
genre_facet Antarc*
Antarctic
Antarctica
East Antarctica
ice core
Ice Sheet
Wilkes Land
op_source 10
1
op_relation Nature Communications
2041-1723
http://hdl.handle.net/10044/1/103508
doi:10.1038/s41467-023-37325-y
op_rights © The Author(s) 2023 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/
op_doi https://doi.org/10.1038/s41467-023-37325-y
container_title Nature Communications
container_volume 14
container_issue 1
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