Coupled marine-ice-sheet/Earth dynamics using a dynamically consistent ice-sheet model and a self-gravitating viscous Earth model
We use a self-gravitating viscoelastic model of the Earth and a dynamically consistent marine ice-sheet model to study the relationships between marine ice-sheet dynamics, relative sea level, basal topography and bedrock dynamics. Our main conclusion is that sea-level change and lithospheric couplin...
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International Glaciological Society
2001
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Online Access: | http://nora.nerc.ac.uk/id/eprint/19821/ |
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ftnerc:oai:nora.nerc.ac.uk:19821 2023-05-15T13:45:12+02:00 Coupled marine-ice-sheet/Earth dynamics using a dynamically consistent ice-sheet model and a self-gravitating viscous Earth model Le Meur, E. Hindmarsh, Richard C.A. 2001 http://nora.nerc.ac.uk/id/eprint/19821/ unknown International Glaciological Society Le Meur, E.; Hindmarsh, Richard C.A. orcid:0000-0003-1633-2416 . 2001 Coupled marine-ice-sheet/Earth dynamics using a dynamically consistent ice-sheet model and a self-gravitating viscous Earth model. Journal of Glaciology, 47 (157). 258-270. https://doi.org/10.3189/172756501781832322 <https://doi.org/10.3189/172756501781832322> Publication - Article PeerReviewed 2001 ftnerc https://doi.org/10.3189/172756501781832322 2023-02-04T19:32:30Z We use a self-gravitating viscoelastic model of the Earth and a dynamically consistent marine ice-sheet model to study the relationships between marine ice-sheet dynamics, relative sea level, basal topography and bedrock dynamics. Our main conclusion is that sea-level change and lithospheric coupling are likely to have played limited roles in the postglacial retreat of marine ice sheets. The postglacial rise in sea level would only have caused at the most around 100 km of grounding-line retreat for an ice sheet of similar dimensions to the West Antarctic ice sheet, compared with the several hundred km of retreat which has occurred in the Ross Sea. There is no evidence that reverse slopes lead to instability. Incorporating coupling with lithospheric dynamics does not produce markedly different effects. The implication of these studies is that marine ice-sheet retreat is the result of physical mechanisms other than lithospheric coupling and sea-level rise. Article in Journal/Newspaper Antarc* Antarctic Ice Sheet Journal of Glaciology Ross Sea Natural Environment Research Council: NERC Open Research Archive Antarctic Ross Sea West Antarctic Ice Sheet Journal of Glaciology 47 157 258 270 |
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Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
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ftnerc |
language |
unknown |
description |
We use a self-gravitating viscoelastic model of the Earth and a dynamically consistent marine ice-sheet model to study the relationships between marine ice-sheet dynamics, relative sea level, basal topography and bedrock dynamics. Our main conclusion is that sea-level change and lithospheric coupling are likely to have played limited roles in the postglacial retreat of marine ice sheets. The postglacial rise in sea level would only have caused at the most around 100 km of grounding-line retreat for an ice sheet of similar dimensions to the West Antarctic ice sheet, compared with the several hundred km of retreat which has occurred in the Ross Sea. There is no evidence that reverse slopes lead to instability. Incorporating coupling with lithospheric dynamics does not produce markedly different effects. The implication of these studies is that marine ice-sheet retreat is the result of physical mechanisms other than lithospheric coupling and sea-level rise. |
format |
Article in Journal/Newspaper |
author |
Le Meur, E. Hindmarsh, Richard C.A. |
spellingShingle |
Le Meur, E. Hindmarsh, Richard C.A. Coupled marine-ice-sheet/Earth dynamics using a dynamically consistent ice-sheet model and a self-gravitating viscous Earth model |
author_facet |
Le Meur, E. Hindmarsh, Richard C.A. |
author_sort |
Le Meur, E. |
title |
Coupled marine-ice-sheet/Earth dynamics using a dynamically consistent ice-sheet model and a self-gravitating viscous Earth model |
title_short |
Coupled marine-ice-sheet/Earth dynamics using a dynamically consistent ice-sheet model and a self-gravitating viscous Earth model |
title_full |
Coupled marine-ice-sheet/Earth dynamics using a dynamically consistent ice-sheet model and a self-gravitating viscous Earth model |
title_fullStr |
Coupled marine-ice-sheet/Earth dynamics using a dynamically consistent ice-sheet model and a self-gravitating viscous Earth model |
title_full_unstemmed |
Coupled marine-ice-sheet/Earth dynamics using a dynamically consistent ice-sheet model and a self-gravitating viscous Earth model |
title_sort |
coupled marine-ice-sheet/earth dynamics using a dynamically consistent ice-sheet model and a self-gravitating viscous earth model |
publisher |
International Glaciological Society |
publishDate |
2001 |
url |
http://nora.nerc.ac.uk/id/eprint/19821/ |
geographic |
Antarctic Ross Sea West Antarctic Ice Sheet |
geographic_facet |
Antarctic Ross Sea West Antarctic Ice Sheet |
genre |
Antarc* Antarctic Ice Sheet Journal of Glaciology Ross Sea |
genre_facet |
Antarc* Antarctic Ice Sheet Journal of Glaciology Ross Sea |
op_relation |
Le Meur, E.; Hindmarsh, Richard C.A. orcid:0000-0003-1633-2416 . 2001 Coupled marine-ice-sheet/Earth dynamics using a dynamically consistent ice-sheet model and a self-gravitating viscous Earth model. Journal of Glaciology, 47 (157). 258-270. https://doi.org/10.3189/172756501781832322 <https://doi.org/10.3189/172756501781832322> |
op_doi |
https://doi.org/10.3189/172756501781832322 |
container_title |
Journal of Glaciology |
container_volume |
47 |
container_issue |
157 |
container_start_page |
258 |
op_container_end_page |
270 |
_version_ |
1766216901603622912 |