Articles | Volume 17, issue 1
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

Data sets

Greenland_ice_melange Adrien Wehrlé

Model code and software

AdrienWehrle/earthspy: v0.3.0 (v0.3.0) Adrien Wehrlé

BRIMM, a simple fjord melange dynamics model (srht/master github/master e3ae4f91446e28b94b28b131b59e8a8fd756f8af) Martin P. Lüthi

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.