Iizuka, Mutsumi;
Seki, Osamu;
Wilson, David J;
Suganuma, Yusuke;
Horikawa, Keiji;
van de Flierdt, Tina;
Ikehara, Minoru;
... Sugisaki, Saiko; + view all
(2023)
Multiple episodes of ice loss from the Wilkes Subglacial Basin during the Last Interglacial.
Nature Communications
, 14
(1)
, Article 2129. 10.1038/s41467-023-37325-y.
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Abstract
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.
| Type: | Article |
|---|---|
| Title: | Multiple episodes of ice loss from the Wilkes Subglacial Basin during the Last Interglacial |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1038/s41467-023-37325-y |
| Publisher version: | https://doi.org/10.1038/s41467-023-37325-y |
| Language: | English |
| Additional information: | 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/. |
| Keywords: | Climate-change impacts, Palaeoclimate |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Earth Sciences |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10168770 |
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