The stability of grounding lines on retrograde slopes
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...
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Format: | Article in Journal/Newspaper |
Language: | English |
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Copernicus Publications
2012
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Online Access: | http://nora.nerc.ac.uk/id/eprint/18568/ https://nora.nerc.ac.uk/id/eprint/18568/1/tc-6-1497-2012.pdf http://www.the-cryosphere.net/6/1497/2012/tc-6-1497-2012.pdf |
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ftnerc:oai:nora.nerc.ac.uk:18568 2023-05-15T13:45:12+02:00 The stability of grounding lines on retrograde slopes Gudmundsson, G.H. Krug, J. Durand, G. Favier, L. Gagliardini, O. 2012 text http://nora.nerc.ac.uk/id/eprint/18568/ https://nora.nerc.ac.uk/id/eprint/18568/1/tc-6-1497-2012.pdf http://www.the-cryosphere.net/6/1497/2012/tc-6-1497-2012.pdf en eng Copernicus Publications https://nora.nerc.ac.uk/id/eprint/18568/1/tc-6-1497-2012.pdf Gudmundsson, G.H. orcid:0000-0003-4236-5369 Krug, J.; Durand, G.; Favier, L.; Gagliardini, O. 2012 The stability of grounding lines on retrograde slopes. Cryosphere, 6 (6). 1497-1505. https://doi.org/10.5194/tc-6-1497-2012 <https://doi.org/10.5194/tc-6-1497-2012> Publication - Article PeerReviewed 2012 ftnerc https://doi.org/10.5194/tc-6-1497-2012 2023-02-04T19:31:51Z 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 marine 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 a retrograde slope, must be inherently unstable. Article in Journal/Newspaper Antarc* Antarctic Ice Sheet Natural Environment Research Council: NERC Open Research Archive Antarctic West Antarctic Ice Sheet The Cryosphere 6 6 1497 1505 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
description |
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 marine 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 a retrograde slope, must be inherently unstable. |
format |
Article in Journal/Newspaper |
author |
Gudmundsson, G.H. Krug, J. Durand, G. Favier, L. Gagliardini, O. |
spellingShingle |
Gudmundsson, G.H. Krug, J. Durand, G. Favier, L. Gagliardini, O. The stability of grounding lines on retrograde slopes |
author_facet |
Gudmundsson, G.H. Krug, J. Durand, G. Favier, L. Gagliardini, O. |
author_sort |
Gudmundsson, G.H. |
title |
The stability of grounding lines on retrograde slopes |
title_short |
The stability of grounding lines on retrograde slopes |
title_full |
The stability of grounding lines on retrograde slopes |
title_fullStr |
The stability of grounding lines on retrograde slopes |
title_full_unstemmed |
The stability of grounding lines on retrograde slopes |
title_sort |
stability of grounding lines on retrograde slopes |
publisher |
Copernicus Publications |
publishDate |
2012 |
url |
http://nora.nerc.ac.uk/id/eprint/18568/ https://nora.nerc.ac.uk/id/eprint/18568/1/tc-6-1497-2012.pdf http://www.the-cryosphere.net/6/1497/2012/tc-6-1497-2012.pdf |
geographic |
Antarctic West Antarctic Ice Sheet |
geographic_facet |
Antarctic West Antarctic Ice Sheet |
genre |
Antarc* Antarctic Ice Sheet |
genre_facet |
Antarc* Antarctic Ice Sheet |
op_relation |
https://nora.nerc.ac.uk/id/eprint/18568/1/tc-6-1497-2012.pdf Gudmundsson, G.H. orcid:0000-0003-4236-5369 Krug, J.; Durand, G.; Favier, L.; Gagliardini, O. 2012 The stability of grounding lines on retrograde slopes. Cryosphere, 6 (6). 1497-1505. https://doi.org/10.5194/tc-6-1497-2012 <https://doi.org/10.5194/tc-6-1497-2012> |
op_doi |
https://doi.org/10.5194/tc-6-1497-2012 |
container_title |
The Cryosphere |
container_volume |
6 |
container_issue |
6 |
container_start_page |
1497 |
op_container_end_page |
1505 |
_version_ |
1766216714626793472 |