Deglaciation-Induced Spatially Variable Sea Level Change: A Simple-Model Case Study for the Greenland and Antarctic Ice Sheets
Some studies on deglaciation-induced sea level change provide only a global average change, thus neglecting the fact that sea level change is spatially variable. This is due mainly to the gravitational and visco-elastic feedback effects of the changing surface mass loads. In order to address this ap...
Published in: | The International Journal of Ocean and Climate Systems |
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Online Access: | https://doi.org/10.1260/1759-3131.1.2.67 https://doaj.org/article/7227feb765584aeb807f900986eeaeb8 |
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ftdoajarticles:oai:doaj.org/article:7227feb765584aeb807f900986eeaeb8 2023-05-15T13:51:24+02:00 Deglaciation-Induced Spatially Variable Sea Level Change: A Simple-Model Case Study for the Greenland and Antarctic Ice Sheets M. Kuhn W.E. Featherstone O. Makarynskyy W. Keller 2010-06-01T00:00:00Z https://doi.org/10.1260/1759-3131.1.2.67 https://doaj.org/article/7227feb765584aeb807f900986eeaeb8 EN eng SAGE Publishing https://doi.org/10.1260/1759-3131.1.2.67 https://doaj.org/toc/1759-3131 https://doaj.org/toc/1759-314X 1759-3131 1759-314X doi:10.1260/1759-3131.1.2.67 https://doaj.org/article/7227feb765584aeb807f900986eeaeb8 International Journal of Ocean and Climate Systems, Vol 1 (2010) Ocean engineering TC1501-1800 Oceanography GC1-1581 article 2010 ftdoajarticles https://doi.org/10.1260/1759-3131.1.2.67 2022-12-31T01:39:08Z Some studies on deglaciation-induced sea level change provide only a global average change, thus neglecting the fact that sea level change is spatially variable. This is due mainly to the gravitational and visco-elastic feedback effects of the changing surface mass loads. In order to address this apparent misconception and raise further awareness, we provide a conceptual example based on a simulated total melt of the Greenland and Antarctic ice sheets. This would give a global average sea level change of about 64 m. However, due to the changed distribution of gravitating masses, the sea-level change depends on location, with a range of about −27 m to +79 m (i.e., sea-level will even fall in some places). This spatial dependency has several implications, such as >10% biases in global average sea-level change estimates based only on tide-gauge records, flooding of almost 10% of current land areas, an increase of the length of day by almost a half a second and a northward move of the centre of mass (geocentre) by about 20 m. Article in Journal/Newspaper Antarc* Antarctic Greenland Directory of Open Access Journals: DOAJ Articles Antarctic Greenland The International Journal of Ocean and Climate Systems 1 2 67 83 |
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Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Ocean engineering TC1501-1800 Oceanography GC1-1581 |
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Ocean engineering TC1501-1800 Oceanography GC1-1581 M. Kuhn W.E. Featherstone O. Makarynskyy W. Keller Deglaciation-Induced Spatially Variable Sea Level Change: A Simple-Model Case Study for the Greenland and Antarctic Ice Sheets |
topic_facet |
Ocean engineering TC1501-1800 Oceanography GC1-1581 |
description |
Some studies on deglaciation-induced sea level change provide only a global average change, thus neglecting the fact that sea level change is spatially variable. This is due mainly to the gravitational and visco-elastic feedback effects of the changing surface mass loads. In order to address this apparent misconception and raise further awareness, we provide a conceptual example based on a simulated total melt of the Greenland and Antarctic ice sheets. This would give a global average sea level change of about 64 m. However, due to the changed distribution of gravitating masses, the sea-level change depends on location, with a range of about −27 m to +79 m (i.e., sea-level will even fall in some places). This spatial dependency has several implications, such as >10% biases in global average sea-level change estimates based only on tide-gauge records, flooding of almost 10% of current land areas, an increase of the length of day by almost a half a second and a northward move of the centre of mass (geocentre) by about 20 m. |
format |
Article in Journal/Newspaper |
author |
M. Kuhn W.E. Featherstone O. Makarynskyy W. Keller |
author_facet |
M. Kuhn W.E. Featherstone O. Makarynskyy W. Keller |
author_sort |
M. Kuhn |
title |
Deglaciation-Induced Spatially Variable Sea Level Change: A Simple-Model Case Study for the Greenland and Antarctic Ice Sheets |
title_short |
Deglaciation-Induced Spatially Variable Sea Level Change: A Simple-Model Case Study for the Greenland and Antarctic Ice Sheets |
title_full |
Deglaciation-Induced Spatially Variable Sea Level Change: A Simple-Model Case Study for the Greenland and Antarctic Ice Sheets |
title_fullStr |
Deglaciation-Induced Spatially Variable Sea Level Change: A Simple-Model Case Study for the Greenland and Antarctic Ice Sheets |
title_full_unstemmed |
Deglaciation-Induced Spatially Variable Sea Level Change: A Simple-Model Case Study for the Greenland and Antarctic Ice Sheets |
title_sort |
deglaciation-induced spatially variable sea level change: a simple-model case study for the greenland and antarctic ice sheets |
publisher |
SAGE Publishing |
publishDate |
2010 |
url |
https://doi.org/10.1260/1759-3131.1.2.67 https://doaj.org/article/7227feb765584aeb807f900986eeaeb8 |
geographic |
Antarctic Greenland |
geographic_facet |
Antarctic Greenland |
genre |
Antarc* Antarctic Greenland |
genre_facet |
Antarc* Antarctic Greenland |
op_source |
International Journal of Ocean and Climate Systems, Vol 1 (2010) |
op_relation |
https://doi.org/10.1260/1759-3131.1.2.67 https://doaj.org/toc/1759-3131 https://doaj.org/toc/1759-314X 1759-3131 1759-314X doi:10.1260/1759-3131.1.2.67 https://doaj.org/article/7227feb765584aeb807f900986eeaeb8 |
op_doi |
https://doi.org/10.1260/1759-3131.1.2.67 |
container_title |
The International Journal of Ocean and Climate Systems |
container_volume |
1 |
container_issue |
2 |
container_start_page |
67 |
op_container_end_page |
83 |
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1766255239643529216 |