TY - JOUR
T1 - Multiple episodes of ice loss from the Wilkes Subglacial Basin during the Last Interglacial
AU - Iizuka, Mutsumi
AU - Seki, Osamu
AU - Wilson, David J.
AU - Suganuma, Yusuke
AU - Horikawa, Keiji
AU - van de Flierdt, Tina
AU - Ikehara, Minoru
AU - Itaki, Takuya
AU - Irino, Tomohisa
AU - Yamamoto, Masanobu
AU - Hirabayashi, Motohiro
AU - Matsuzaki, Hiroyuki
AU - Sugisaki, Saiko
N1 - Publisher Copyright:
© 2023, The Author(s).
PY - 2023/12
Y1 - 2023/12
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85152864067&partnerID=8YFLogxK
U2 - 10.1038/s41467-023-37325-y
DO - 10.1038/s41467-023-37325-y
M3 - 学術論文
C2 - 37072396
AN - SCOPUS:85152864067
SN - 2041-1723
VL - 14
JO - Nature Communications
JF - Nature Communications
IS - 1
M1 - 2129
ER -
