Articles | Volume 17, issue 1
https://doi.org/10.5194/tc-17-309-2023
https://doi.org/10.5194/tc-17-309-2023
Research article
 | 
23 Jan 2023
Research article |  | 23 Jan 2023

The control of short-term ice mélange weakening episodes on calving activity at major Greenland outlet glaciers

Adrien Wehrlé, Martin P. Lüthi, and Andreas Vieli

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Short summary
We characterized short-lived episodes of ice mélange weakening (IMW) at the front of three major Greenland outlet glaciers. Through a continuous detection at the front of Kangerdlugssuaq Glacier during the June-to-September period from 2018 to 2021, we found that 87 % of the IMW episodes occurred prior to a large-scale calving event. Using a simple model for ice mélange motion, we further characterized the IMW process as self-sustained through the existence of an IMW–calving feedback.