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

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Title: Parameter sensitivity studies for the ice flow of the Ross Ice Shelf, Antarctica
Authors: Humbert, Angelika Browse this author
Greve, Ralf Browse this author →KAKEN DB
Hutter, Kolumban Browse this author
Keywords: ice shelf flow
Ross Ice Shelf
shallow shelf approximation
Issue Date: 10-Dec-2005
Publisher: American Geophysical Union
Journal Title: Journal of Geophysical Research
Volume: 110
Issue: f4
Start Page: F04022
Publisher DOI: 10.1029/2004JF000170
Abstract: 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
Type: article (author version)
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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