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The Stability of Grounding Lines on Retrograde Slopes : Volume 6, Issue 4 (18/07/2012)

By Gudmundsson, G. H.

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Book Id: WPLBN0004022693
Format Type: PDF Article :
File Size: Pages 23
Reproduction Date: 2015

Title: The Stability of Grounding Lines on Retrograde Slopes : Volume 6, Issue 4 (18/07/2012)  
Author: Gudmundsson, G. H.
Volume: Vol. 6, Issue 4
Language: English
Subject: Science, Cryosphere, Discussions
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


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Durand, G., Krug, J., Favier, L., Gudmundsson, G. H., & Gagliardini, O. (2012). The Stability of Grounding Lines on Retrograde Slopes : Volume 6, Issue 4 (18/07/2012). Retrieved from

Description: British Antarctic Survey, High Cross, Madingley Rd., Cambridge, CB3 0ET, UK. The stability of marine ice sheets grounded on beds that slope upwards in the overall direction of flow is investigated numerically in two horizontal dimensions. We give examples of stable grounding lines on such retrograde slopes illustrating that marine ice sheets are not unconditionally unstable in two-horizontal dimensions. Retrograde bed slopes at the grounding lines of maritime ice sheets, such as the West Antarctic Ice Sheet (WAIS), do not per se imply an instability, nor do they imply that these regions are close to a threshold of instability. We therefore question those estimates of the potential near-future contribution of WAIS to global sea level change based solely on the notion that WAIS, resting on retrograde slope, must be inherently unstable.

The stability of grounding lines on retrograde slopes

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