The Cryosphere
The Cryosphere
TC
Articles | Volume 20, issue 5
Articles | Volume 20, issue 5
https://doi.org/10.5194/tc-20-2793-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-20-2793-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 20, issue 5
Research article
 | 
20 May 2026
Research article |  | 20 May 2026

Radiostratigraphy and surface accumulation history of the Amundsen-Weddell Ice Divide, West Antarctica

Felipe Napoleoni, Michael J. Bentley, Neil Ross, Stewart S. R. Jamieson, José A. Uribe, Jonathan Oberreuter, Rodrigo Zamora, Andrés Rivera, Andrew M. Smith, Robert G. Bingham, and Kenichi Matsuoka

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Short summary
We mapped buried layers inside West Antarctic ice across 13,000 km² near the Amundsen–Weddell divide using radar. Some layers may be up to 17 kyr old. The layers remain well preserved in slow-moving ice but become distorted where ice flows faster. Snowfall has long been greater on one side of the divide, suggesting the ice divide has remained stable for thousands of years. Our study helps connect climate records across West Antarctica and improve models used to predict future ice-sheet change.
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