The Cryosphere
The Cryosphere
TC
Articles | Volume 20, issue 4
Articles | Volume 20, issue 4
https://doi.org/10.5194/tc-20-2035-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-20-2035-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 20, issue 4
Research article
 | 
13 Apr 2026
Research article |  | 13 Apr 2026

A thinner-than-present West Antarctic Ice Sheet in the southern Weddell Sea Embayment during the Holocene

David Small, Réka-H. Fülöp, Rachel K. Smedley, Thomas Lees, Stephan Trabucatti, Derek Fabel, Maria Miguens-Rodriguez, Andrew M. Smith, and Grant V. Boeckmann

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Short summary
We collected bedrock currently buried by tens of metres of ice from a site in the Weddell Sea Embayment, West Antarctica. Models suggest that the ice sheet here may have been smaller than it is today at some time during the last few thousand years. The presence of rare isotopes in this bedrock requires that ice became thinner before rethickening to its present-day configuration. This fluctuation in the size of the ice sheet occurred within the last ~4000 years and may have lasted only 300 years.
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