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A simple model of mélange buttressing for calving glaciers

Authors
/persons/resource/Tanja.Schlemm

Schlemm,  Tanja
Potsdam Institute for Climate Impact Research;

/persons/resource/Levermann

Levermann,  Anders
Potsdam Institute for Climate Impact Research;

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23881oa.pdf
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Citation

Schlemm, T., Levermann, A. (2020 online): A simple model of mélange buttressing for calving glaciers. - The Cryosphere.
https://doi.org/10.5194/tc-2020-50


Cite as: https://publications.pik-potsdam.de/pubman/item/item_23881
Abstract
Both ice sheets on Greenland and Antarctica are discharging ice into the ocean. In many regions along the coast of the ice sheets, the icebergs calf into a bay. If the addition of icebergs through calving is faster than their transport out of the embayment, the icebergs will be frozen into a mélange with surrounding sea ice in winter. In this case, the buttressing effect of the ice mélange can be considerably stronger than any buttressing by mere sea ice would be. This in turn stabilizes the glacier terminus and leads to a reduction in calving rates. Here we propose a simple but robust buttressing model of ice mélange which can be used in numerical and analytical modeling