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 redress this...
| Main Authors: | , , , |
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| Format: | Journal Article |
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Multi-Science Publishing
2010
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| Online Access: | http://hdl.handle.net/20.500.11937/35151 |
| _version_ | 1848754417865588736 |
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| author | Kuhn, Michael Featherstone, Will Makarynskyy, Oleg Keller, W. |
| author_facet | Kuhn, Michael Featherstone, Will Makarynskyy, Oleg Keller, W. |
| author_sort | Kuhn, Michael |
| building | Curtin Institutional Repository |
| collection | Online Access |
| 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 redress 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 in the case of a total melt, 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. |
| first_indexed | 2025-11-14T08:40:05Z |
| format | Journal Article |
| id | curtin-20.500.11937-35151 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:40:05Z |
| publishDate | 2010 |
| publisher | Multi-Science Publishing |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-351512017-01-30T13:48:01Z Deglaciation-induced spatially variable sea level change: a simple-model case study for the Greenland and Antarctic ice sheets Kuhn, Michael Featherstone, Will Makarynskyy, Oleg Keller, W. flooding sea-level mass centre simulated melting length of day conceptual example ice sheet 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 redress 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 in the case of a total melt, 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. 2010 Journal Article http://hdl.handle.net/20.500.11937/35151 Multi-Science Publishing fulltext |
| spellingShingle | flooding sea-level mass centre simulated melting length of day conceptual example ice sheet Kuhn, Michael Featherstone, Will Makarynskyy, Oleg Keller, W. Deglaciation-induced spatially variable sea level change: a simple-model case study for the Greenland and Antarctic ice sheets |
| title | 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_short | 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 |
| topic | flooding sea-level mass centre simulated melting length of day conceptual example ice sheet |
| url | http://hdl.handle.net/20.500.11937/35151 |