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

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タイトル: Polythermal three-dimensional modelling of the Greenland ice sheet with varied geothermal heat flux
著者: Greve, Ralf 著作を一覧する
Hutter, Kolumban 著作を一覧する
キーワード: Greenland
Ice sheet
Geothermal heat flux
Polythermal ice
Modelling
発行日: 1995年
出版者: International Glaciological Society
誌名: Annals of Glaciology
巻: 21
開始ページ: 8
終了ページ: 12
抄録: 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
Relation (URI): http://www.igsoc.org/
資料タイプ: article
URI: http://hdl.handle.net/2115/47803
出現コレクション:雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

提供者: Greve Ralf

 

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