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

Mutsumi Iizuka*, Osamu Seki*, David J. Wilson, Yusuke Suganuma, Keiji Horikawa, Tina van de Flierdt, Minoru Ikehara, Takuya Itaki, Tomohisa Irino, Masanobu Yamamoto, Motohiro Hirabayashi, Hiroyuki Matsuzaki, Saiko Sugisaki

*この論文の責任著者

研究成果: ジャーナルへの寄稿学術論文査読

10 被引用数 (Scopus)

抄録

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.

本文言語英語
論文番号2129
ジャーナルNature Communications
14
1
DOI
出版ステータス出版済み - 2023/12

ASJC Scopus 主題領域

  • 化学一般
  • 生化学、遺伝学、分子生物学一般
  • 物理学および天文学一般

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