Articles | Volume 19, issue 10
https://doi.org/10.5194/tc-19-4471-2025
https://doi.org/10.5194/tc-19-4471-2025
Research article
 | 
10 Oct 2025
Research article |  | 10 Oct 2025

Warm proglacial lake temperatures and thermal undercutting enhance rapid retreat of an Arctic glacier

Adrian Dye, Robert Bryant, Francesca Falcini, Joseph Mallalieu, Miles Dimbleby, Michael Beckwith, David Rippin, and Nina Kirchner

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Cited articles

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Boyce, E. S., Motyka, R. J., and Truffer, M.: Flotation and retreat of a lake-calving terminus, Mendenhall Glacier, southeast Alaska, USA, J. Glaciol., 53, 211–224, https://doi.org/10.3189/172756507782202928, 2007. 
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Short summary
Thermal undercutting of the terminus has enhanced recent rapid retreat of an Arctic glacier. Water temperatures (~4 °C) at the ice front were warmer than previously reported and thermal undercutting was over several metres deep. This triggered phases of high calving activity, playing a substantial role in the rapid retreat of Kaskasapakte Glacier since 2012, with important implications for processes occurring at glacier-water contact points and implications for hydrology and ecology downstream.
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