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Polythermal three-dimensional modelling of the Greenland ice sheet with varied geothermal heat flux

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Title: Polythermal three-dimensional modelling of the Greenland ice sheet with varied geothermal heat flux
Authors: Greve, Ralf Browse this author →KAKEN DB
Hutter, Kolumban Browse this author
Keywords: Greenland
Ice sheet
Geothermal heat flux
Polythermal ice
Issue Date: 1995
Publisher: International Glaciological Society
Journal Title: Annals of Glaciology
Volume: 21
Start Page: 8
End Page: 12
Abstract: Computations over 50000 years into steady state with Greve's polythermal ice-sheet model and its numerical code are performed for the Greenland ice sheet with today's climatological input (surface temperature and accumulation function) and three values of the geothermal heat flux: (42,54.6,29.4) mWm -2. It is shown that through the thermomechanical coupling the geometry as well as the thermal regime, in particular that close to the bed, respond surprisingly strongly to the basal thermal heat input. The most sensitive variable is the basal temperature field, but the maximum height of the summit also varies by more than ± 100 m, Furthermore, some intcrcomparison of the model outputs with the real ice sheet is carried out, showing that the model provides reasonable results for the ice-sheet geometry as well as for the englacial temperatures.
Rights: © 1995 International Glaciological Society
Type: article
Appears in Collections:低温科学研究所 (Institute of Low Temperature Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: Greve Ralf

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