Sea level as a stabilizing factor for marine-ice-sheet grounding lines
Climate change could potentially destabilize marine ice sheets, which would affect projections of future sea-level rise1, 2, 3, 4. Specifically, an instability mechanism5, 6, 7, 8 has been predicted for marine ice sheets such as the West Antarctic ice sheet that rest on reversed bed slopes, whereby...
Published in: | Nature Geoscience |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Springer Nature
2010
|
Subjects: | |
Online Access: | http://nrs.harvard.edu/urn-3:HUL.InstRepos:34299218 https://doi.org/10.1038/NGEO1012 |
id |
ftharvardudash:oai:dash.harvard.edu:1/34299218 |
---|---|
record_format |
openpolar |
spelling |
ftharvardudash:oai:dash.harvard.edu:1/34299218 2023-05-15T13:36:21+02:00 Sea level as a stabilizing factor for marine-ice-sheet grounding lines Gomez, Natalya Alissa Mitrovica, Jerry X. Huybers, Peter John Clark, Peter U. 2010 application/pdf http://nrs.harvard.edu/urn-3:HUL.InstRepos:34299218 https://doi.org/10.1038/NGEO1012 en_US eng Springer Nature doi:10.1038/NGEO1012 http://www.people.fas.harvard.edu/~phuybers/Doc/stabilizing_naturegeo2010.pdf http://www.researchgate.net/profile/Peter_Huybers/publication/232761539_Sea_level_as_a_stabilizing_factor_for_marine-ice-sheet_grounding_lines/links/00b4952c86120aafe6000000 Nature Geoscience Gomez, Natalya, Jerry X. Mitrovica, Peter Huybers, and Peter U. Clark. 2010. “Sea Level as a Stabilizing Factor for Marine-Ice-Sheet Grounding Lines.” Nature Geoscience 3 (12) (November 21): 850–853. doi:10.1038/ngeo1012. 1752-0894 1752-0908 http://nrs.harvard.edu/urn-3:HUL.InstRepos:34299218 Journal Article 2010 ftharvardudash https://doi.org/10.1038/NGEO1012 https://doi.org/10.1038/ngeo1012 2022-04-04T20:51:53Z Climate change could potentially destabilize marine ice sheets, which would affect projections of future sea-level rise1, 2, 3, 4. Specifically, an instability mechanism5, 6, 7, 8 has been predicted for marine ice sheets such as the West Antarctic ice sheet that rest on reversed bed slopes, whereby ice-sheet thinning or rising sea level leads to irreversible retreat of the grounding line. However, existing analyses of this instability mechanism have not accounted for deformational and gravitational effects that lead to a sea-level fall at the margin of a rapidly shrinking ice sheet9, 10, 11. Here we present a suite of predictions of gravitationally self-consistent sea-level change following grounding-line migration. Our predictions vary the initial ice-sheet size and also consider the contribution to sea-level change from various subregions of the simulated ice sheet. Using these results, we revisit a canonical analysis of marine-ice-sheet stability5 and demonstrate that gravity and deformation-induced sea-level changes local to the grounding line contribute a stabilizing influence on ice sheets grounded on reversed bed slopes. We conclude that accurate treatments of sea-level change should be incorporated into analyses of past and future marine-ice-sheet dynamics. Earth and Planetary Sciences Version of Record Article in Journal/Newspaper Antarc* Antarctic Ice Sheet Harvard University: DASH - Digital Access to Scholarship at Harvard Antarctic West Antarctic Ice Sheet Nature Geoscience 3 12 850 853 |
institution |
Open Polar |
collection |
Harvard University: DASH - Digital Access to Scholarship at Harvard |
op_collection_id |
ftharvardudash |
language |
English |
description |
Climate change could potentially destabilize marine ice sheets, which would affect projections of future sea-level rise1, 2, 3, 4. Specifically, an instability mechanism5, 6, 7, 8 has been predicted for marine ice sheets such as the West Antarctic ice sheet that rest on reversed bed slopes, whereby ice-sheet thinning or rising sea level leads to irreversible retreat of the grounding line. However, existing analyses of this instability mechanism have not accounted for deformational and gravitational effects that lead to a sea-level fall at the margin of a rapidly shrinking ice sheet9, 10, 11. Here we present a suite of predictions of gravitationally self-consistent sea-level change following grounding-line migration. Our predictions vary the initial ice-sheet size and also consider the contribution to sea-level change from various subregions of the simulated ice sheet. Using these results, we revisit a canonical analysis of marine-ice-sheet stability5 and demonstrate that gravity and deformation-induced sea-level changes local to the grounding line contribute a stabilizing influence on ice sheets grounded on reversed bed slopes. We conclude that accurate treatments of sea-level change should be incorporated into analyses of past and future marine-ice-sheet dynamics. Earth and Planetary Sciences Version of Record |
format |
Article in Journal/Newspaper |
author |
Gomez, Natalya Alissa Mitrovica, Jerry X. Huybers, Peter John Clark, Peter U. |
spellingShingle |
Gomez, Natalya Alissa Mitrovica, Jerry X. Huybers, Peter John Clark, Peter U. Sea level as a stabilizing factor for marine-ice-sheet grounding lines |
author_facet |
Gomez, Natalya Alissa Mitrovica, Jerry X. Huybers, Peter John Clark, Peter U. |
author_sort |
Gomez, Natalya Alissa |
title |
Sea level as a stabilizing factor for marine-ice-sheet grounding lines |
title_short |
Sea level as a stabilizing factor for marine-ice-sheet grounding lines |
title_full |
Sea level as a stabilizing factor for marine-ice-sheet grounding lines |
title_fullStr |
Sea level as a stabilizing factor for marine-ice-sheet grounding lines |
title_full_unstemmed |
Sea level as a stabilizing factor for marine-ice-sheet grounding lines |
title_sort |
sea level as a stabilizing factor for marine-ice-sheet grounding lines |
publisher |
Springer Nature |
publishDate |
2010 |
url |
http://nrs.harvard.edu/urn-3:HUL.InstRepos:34299218 https://doi.org/10.1038/NGEO1012 |
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 |
doi:10.1038/NGEO1012 http://www.people.fas.harvard.edu/~phuybers/Doc/stabilizing_naturegeo2010.pdf http://www.researchgate.net/profile/Peter_Huybers/publication/232761539_Sea_level_as_a_stabilizing_factor_for_marine-ice-sheet_grounding_lines/links/00b4952c86120aafe6000000 Nature Geoscience Gomez, Natalya, Jerry X. Mitrovica, Peter Huybers, and Peter U. Clark. 2010. “Sea Level as a Stabilizing Factor for Marine-Ice-Sheet Grounding Lines.” Nature Geoscience 3 (12) (November 21): 850–853. doi:10.1038/ngeo1012. 1752-0894 1752-0908 http://nrs.harvard.edu/urn-3:HUL.InstRepos:34299218 |
op_doi |
https://doi.org/10.1038/NGEO1012 https://doi.org/10.1038/ngeo1012 |
container_title |
Nature Geoscience |
container_volume |
3 |
container_issue |
12 |
container_start_page |
850 |
op_container_end_page |
853 |
_version_ |
1766077539361488896 |