Documentation for PISM, the Parallel Ice Sheet Model

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June 2013

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Changing basal conditions during the speed-up of Jakobshavn Isbræ, Greenland
investigators: Marijke Habermann, Martin Truffer, and David Maxwell, University of Alaska Fairbanks
conference: EGU 2013

Here, basal conditions for different years before and after the break-up of the tongue are inferred from surface velocity measurements to investigate the changes and to compare them with parameterizations of basal conditions commonly used in ice-sheet models.

All inversions reproduce the overall pattern of observed surface velocities, which shows that, in general, our data and model choices are capable of reproducing the observations by only adjusting basal yield stress. In the lower 5 km of the glacier a clear trend from higher to lower basal yield stress values is visible.

applications/201306.1370309683.txt.gz · Last modified: 2013/06/04 01:34 by Andy Aschwanden
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