Regional sea-level highstand triggered Holocene ice sheet thinning across coastal Dronning Maud Land, East Antarctica

Yusuke Suganuma; Heitaro Kaneda; Martim Mas e Braga; Takeshige Ishiwa; Takushi Koyama; Jennifer Newall; Jun'ichi Okuno; Takashi Obase; Fuyuki Saito; Irina Rogozhina; Jane Andersen; Moto Kawamata; Motohiro Hirabayashi; Nathaniel Lifton; Ola Fredin; Jonathan Harbor; Arjen Stroeven; Ayako Abe-Ouchi

doi:10.1038/s43247-022-00599-z

Regional sea-level highstand triggered Holocene ice sheet thinning across coastal Dronning Maud Land, East Antarctica

Yusuke Suganuma^*, Heitaro Kaneda, Martim Mas e Braga, Takeshige Ishiwa, Takushi Koyama, Jennifer Newall, Jun'ichi Okuno, Takashi Obase, Fuyuki Saito, Irina Rogozhina, Jane Andersen, Moto Kawamata, Motohiro Hirabayashi, Nathaniel Lifton, Ola Fredin, Jonathan Harbor, Arjen Stroeven, Ayako Abe-Ouchi

^*Corresponding author for this work

School of Geography & Sustainable Development

Research output: Contribution to journal › Article › peer-review

Abstract

The East Antarctic Ice Sheet stores a vast amount of freshwater, which makes it the single largest potential contributor to future sea-level rise. However, the lack of well-constrained geological records of past ice sheet changes impedes model validation, hampers mass balance estimates, and inhibits examination of ice loss mechanisms. Here we identify rapid ice-sheet thinning in coastal Dronning Maud Land from Early to Middle Holocene (9000–5000 years ago) using a deglacial chronology based on in situ cosmogenic nuclide surface exposure dates from central Dronning Maud Land, in concert with numerical simulations of regional and continental ice-sheet evolution. Regional sea-level changes reproduced from our refined ice-load history show a highstand at 9000–8000 years ago. We propose that sea-level rise and a concomitant influx of warmer Circumpolar Deep Water triggered ice shelf breakup via the marine ice sheet instability mechanism, which led to rapid thinning of upstream coastal ice sheet sectors.

Original language	English
Article number	273
Number of pages	11
Journal	Communications Earth & Environment
Volume	3
DOIs	https://doi.org/10.1038/s43247-022-00599-z
Publication status	Published - 9 Nov 2022

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Úa configuration files for "Regional sea-level highstand triggered Holocene ice sheet thinning across coastal Dronning Maud Land, East Antarctica"
Braga, M. M. E. (Creator), Zenodo, 2022
DOI: 10.5281/zenodo.7198461
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Suganuma, Y., Kaneda, H., Mas e Braga, M., Ishiwa, T., Koyama, T., Newall, J., Okuno, J., Obase, T., Saito, F., Rogozhina, I., Andersen, J., Kawamata, M., Hirabayashi, M., Lifton, N., Fredin, O., Harbor, J., Stroeven, A., & Abe-Ouchi, A. (2022). Regional sea-level highstand triggered Holocene ice sheet thinning across coastal Dronning Maud Land, East Antarctica. Communications Earth & Environment, 3, Article 273. https://doi.org/10.1038/s43247-022-00599-z

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title = "Regional sea-level highstand triggered Holocene ice sheet thinning across coastal Dronning Maud Land, East Antarctica",

abstract = "The East Antarctic Ice Sheet stores a vast amount of freshwater, which makes it the single largest potential contributor to future sea-level rise. However, the lack of well-constrained geological records of past ice sheet changes impedes model validation, hampers mass balance estimates, and inhibits examination of ice loss mechanisms. Here we identify rapid ice-sheet thinning in coastal Dronning Maud Land from Early to Middle Holocene (9000–5000 years ago) using a deglacial chronology based on in situ cosmogenic nuclide surface exposure dates from central Dronning Maud Land, in concert with numerical simulations of regional and continental ice-sheet evolution. Regional sea-level changes reproduced from our refined ice-load history show a highstand at 9000–8000 years ago. We propose that sea-level rise and a concomitant influx of warmer Circumpolar Deep Water triggered ice shelf breakup via the marine ice sheet instability mechanism, which led to rapid thinning of upstream coastal ice sheet sectors.",

author = "Yusuke Suganuma and Heitaro Kaneda and {Mas e Braga}, Martim and Takeshige Ishiwa and Takushi Koyama and Jennifer Newall and Jun'ichi Okuno and Takashi Obase and Fuyuki Saito and Irina Rogozhina and Jane Andersen and Moto Kawamata and Motohiro Hirabayashi and Nathaniel Lifton and Ola Fredin and Jonathan Harbor and Arjen Stroeven and Ayako Abe-Ouchi",

note = "Funding: The field campaign was supported by the Japanese Antarctic Research program, the Norwegian Polar Institute/NARE, and SANAE IV Station. The permission for rock sampling in Antarctica has been approved by the ministry of the Environment, Japan. The study was supported by the JSPS Kakenhi (16H05739; 17H06321; 19H00728; 21H01173), the TOREY Science Foundation, NIPR through Advanced Project (KP-1), GRAntarctic, and MAGIC-DML (through grants from Stockholm University, the Norwegian Polar Institute – NARE, the US National Science Foundation (OPP-1542930), the Swedish Research Council, and the German Research Foundation). The high-resolution model experiments were enabled by resources provided by the Swedish National Infrastructure for Computing (SNIC) at the National Supercomputer Centre (NSC) partially funded by the Swedish Research Council through grant agreement no. 2018-05973.",

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Suganuma, Y, Kaneda, H, Mas e Braga, M, Ishiwa, T, Koyama, T, Newall, J, Okuno, J, Obase, T, Saito, F, Rogozhina, I, Andersen, J, Kawamata, M, Hirabayashi, M, Lifton, N, Fredin, O, Harbor, J, Stroeven, A & Abe-Ouchi, A 2022, 'Regional sea-level highstand triggered Holocene ice sheet thinning across coastal Dronning Maud Land, East Antarctica', Communications Earth & Environment, vol. 3, 273. https://doi.org/10.1038/s43247-022-00599-z

TY - JOUR

T1 - Regional sea-level highstand triggered Holocene ice sheet thinning across coastal Dronning Maud Land, East Antarctica

AU - Suganuma, Yusuke

AU - Kaneda, Heitaro

AU - Mas e Braga, Martim

AU - Ishiwa, Takeshige

AU - Koyama, Takushi

AU - Newall, Jennifer

AU - Okuno, Jun'ichi

AU - Obase, Takashi

AU - Saito, Fuyuki

AU - Rogozhina, Irina

AU - Andersen, Jane

AU - Kawamata, Moto

AU - Hirabayashi, Motohiro

AU - Lifton, Nathaniel

AU - Fredin, Ola

AU - Harbor, Jonathan

AU - Stroeven, Arjen

AU - Abe-Ouchi, Ayako

N1 - Funding: The field campaign was supported by the Japanese Antarctic Research program, the Norwegian Polar Institute/NARE, and SANAE IV Station. The permission for rock sampling in Antarctica has been approved by the ministry of the Environment, Japan. The study was supported by the JSPS Kakenhi (16H05739; 17H06321; 19H00728; 21H01173), the TOREY Science Foundation, NIPR through Advanced Project (KP-1), GRAntarctic, and MAGIC-DML (through grants from Stockholm University, the Norwegian Polar Institute – NARE, the US National Science Foundation (OPP-1542930), the Swedish Research Council, and the German Research Foundation). The high-resolution model experiments were enabled by resources provided by the Swedish National Infrastructure for Computing (SNIC) at the National Supercomputer Centre (NSC) partially funded by the Swedish Research Council through grant agreement no. 2018-05973.

PY - 2022/11/9

Y1 - 2022/11/9

N2 - The East Antarctic Ice Sheet stores a vast amount of freshwater, which makes it the single largest potential contributor to future sea-level rise. However, the lack of well-constrained geological records of past ice sheet changes impedes model validation, hampers mass balance estimates, and inhibits examination of ice loss mechanisms. Here we identify rapid ice-sheet thinning in coastal Dronning Maud Land from Early to Middle Holocene (9000–5000 years ago) using a deglacial chronology based on in situ cosmogenic nuclide surface exposure dates from central Dronning Maud Land, in concert with numerical simulations of regional and continental ice-sheet evolution. Regional sea-level changes reproduced from our refined ice-load history show a highstand at 9000–8000 years ago. We propose that sea-level rise and a concomitant influx of warmer Circumpolar Deep Water triggered ice shelf breakup via the marine ice sheet instability mechanism, which led to rapid thinning of upstream coastal ice sheet sectors.

AB - The East Antarctic Ice Sheet stores a vast amount of freshwater, which makes it the single largest potential contributor to future sea-level rise. However, the lack of well-constrained geological records of past ice sheet changes impedes model validation, hampers mass balance estimates, and inhibits examination of ice loss mechanisms. Here we identify rapid ice-sheet thinning in coastal Dronning Maud Land from Early to Middle Holocene (9000–5000 years ago) using a deglacial chronology based on in situ cosmogenic nuclide surface exposure dates from central Dronning Maud Land, in concert with numerical simulations of regional and continental ice-sheet evolution. Regional sea-level changes reproduced from our refined ice-load history show a highstand at 9000–8000 years ago. We propose that sea-level rise and a concomitant influx of warmer Circumpolar Deep Water triggered ice shelf breakup via the marine ice sheet instability mechanism, which led to rapid thinning of upstream coastal ice sheet sectors.

U2 - 10.1038/s43247-022-00599-z

DO - 10.1038/s43247-022-00599-z

M3 - Article

SN - 2662-4435

VL - 3

JO - Communications Earth & Environment

JF - Communications Earth & Environment

M1 - 273

ER -

Regional sea-level highstand triggered Holocene ice sheet thinning across coastal Dronning Maud Land, East Antarctica

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