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Parameter sensitivity studies for the ice flow of the Ross Ice Shelf, Antarctica

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タイトル: Parameter sensitivity studies for the ice flow of the Ross Ice Shelf, Antarctica
著者: Humbert, Angelika 著作を一覧する
Greve, Ralf 著作を一覧する
Hutter, Kolumban 著作を一覧する
キーワード: ice shelf flow
Ross Ice Shelf
shallow shelf approximation
発行日: 2005年12月10日
出版者: American Geophysical Union
誌名: Journal of Geophysical Research
巻: 110
号: f4
開始ページ: F04022
出版社 DOI: 10.1029/2004JF000170
抄録: The diagnostic, dynamic/thermodynamic ice shelf model Finite Element Shallow Shelf Approximation Code (FESSACODE) is applied to the Ross Ice Shelf. We simulate the present ice flow which results from the ice thickness distribution, the inflow at the grounding line, and the surface and bottom temperatures and compare results with measured flow velocities. Our reference simulation reproduces the general flow pattern and the magnitudes of the flow velocities reasonably well. The ice flow is found to be very sensitive to the flow enhancement factor, the ice thickness, and the ice temperature but robust against inflow velocities from ice streams, glaciers, and ice rises. The ice rises (Roosevelt Island and Crary Ice Rise) stabilize the ice shelf by significantly decreasing the flow velocities for the entire ice shelf area. The ice shelf is susceptible to global warming in that a 2°C surface warming entails an increase of the flow velocities by a factor 1.25, whereas a 10°C warming leads to an increase by a factor 3.1.
Rights: An edited version of this paper was published by AGU. Copyright 2005 American Geophysical Union. Humbert, Angelika, Greve, Ralf, Hutter, Kolumban, (2005), Parameter sensitivity studies for the ice flow of the Ross Ice Shelf, Antarctica, Journal of Geophysical Research, 110, F04022, 10.1029/2004JF000170. To view the published open abstract, go to http://dx.doi.org/10.1029/2004JF000170.
資料タイプ: article (author version)
URI: http://hdl.handle.net/2115/29714
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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