The Cryosphere
The Cryosphere
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Articles | Volume 19, issue 4
Articles | Volume 19, issue 4
https://doi.org/10.5194/tc-19-1559-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-19-1559-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 19, issue 4
Research article
 | 
15 Apr 2025
Research article |  | 15 Apr 2025

Ice sheet model simulations reveal that polythermal ice conditions existed across the northeastern USA during the Last Glacial Maximum

Joshua K. Cuzzone, Aaron Barth, Kelsey Barker, and Mathieu Morlighem

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Latest update: 29 May 2025
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Short summary
We use an ice sheet model to simulate the Last Glacial Maximum conditions of the Laurentide Ice Sheet (LIS) across the northeastern United States. A complex thermal history existed for the LIS that caused high erosion across most of the NE USA but prevented erosion across high-elevation mountain peaks and areas where ice flow was slow. This has implications for geologic studies which rely on the erosional nature of the LIS to reconstruct its glacial history and landscape evolution.
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