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...
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Online Access: | http://dx.doi.org/10.1260/1759-3131.1.2.67 https://journals.sagepub.com/doi/pdf/10.1260/1759-3131.1.2.67 |
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crsagepubl:10.1260/1759-3131.1.2.67 2024-10-13T14:03:21+00:00 Deglaciation-Induced Spatially Variable Sea Level Change: A Simple-Model Case Study for the Greenland and Antarctic Ice Sheets Kuhn, M. Featherstone, W.E. Makarynskyy, O. Keller, W. 2010 http://dx.doi.org/10.1260/1759-3131.1.2.67 https://journals.sagepub.com/doi/pdf/10.1260/1759-3131.1.2.67 en eng SAGE Publications https://journals.sagepub.com/page/policies/text-and-data-mining-license The International Journal of Ocean and Climate Systems volume 1, issue 2, page 67-83 ISSN 1759-3131 1759-314X journal-article 2010 crsagepubl https://doi.org/10.1260/1759-3131.1.2.67 2024-10-01T04:11:09Z 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 SAGE Publications Antarctic Greenland The International Journal of Ocean and Climate Systems 1 2 67 83 |
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SAGE Publications |
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crsagepubl |
language |
English |
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 |
Kuhn, M. Featherstone, W.E. Makarynskyy, O. Keller, W. |
spellingShingle |
Kuhn, M. Featherstone, W.E. Makarynskyy, O. Keller, W. Deglaciation-Induced Spatially Variable Sea Level Change: A Simple-Model Case Study for the Greenland and Antarctic Ice Sheets |
author_facet |
Kuhn, M. Featherstone, W.E. Makarynskyy, O. Keller, W. |
author_sort |
Kuhn, M. |
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 Publications |
publishDate |
2010 |
url |
http://dx.doi.org/10.1260/1759-3131.1.2.67 https://journals.sagepub.com/doi/pdf/10.1260/1759-3131.1.2.67 |
geographic |
Antarctic Greenland |
geographic_facet |
Antarctic Greenland |
genre |
Antarc* Antarctic Greenland |
genre_facet |
Antarc* Antarctic Greenland |
op_source |
The International Journal of Ocean and Climate Systems volume 1, issue 2, page 67-83 ISSN 1759-3131 1759-314X |
op_rights |
https://journals.sagepub.com/page/policies/text-and-data-mining-license |
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 |
_version_ |
1812819821645004800 |