The Cryosphere
The Cryosphere
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Articles | Volume 20, issue 9
Articles | Volume 20, issue 9
https://doi.org/10.5194/tc-20-5509-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-20-5509-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 20, issue 9
Research article
 | 
28 Sep 2026
Research article |  | 28 Sep 2026

Dynamic thinning and grounding line retreat in Porpoise Bay, Wilkes Land, East Antarctica

Matilda Weatherley, Chris R. Stokes, Stewart S. R. Jamieson, Sindhu Ramanath, and Alessandro Silvano

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Short summary
Parts of the East Antarctic Ice Sheet rest on a bed below sea level, making them vulnerable to ice dynamic changes and instability, but few glaciers have been studied in detail. Here we report on glaciers draining into Porpoise Bay, Wilkes Land, overlying the Aurora Subglacial Basin. We find ice surface thinning, grounding line retreat and ice surface velocity increase over recent decades, consistent with warm ocean waters intrusion. This highlights this region's vulnerability to future warming.
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