High-resolution modeling of dynamic vertical land movement in the Northern Hemisphere due to changing ice sheets and glaciers
The impact of elastic vertical land movement (VLM) on relative sea levels along the world's coastlines is significant. In Northern Europe, VLM is mainly due to the effect of Glacial Isostatic Adjustment (GIA). However, the rapid melting of ice in the Arctic is causing a substantial elastic upli...
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ftgfzpotsdam:oai:gfzpublic.gfz-potsdam.de:item_5016845 2023-06-11T04:04:13+02:00 High-resolution modeling of dynamic vertical land movement in the Northern Hemisphere due to changing ice sheets and glaciers Ludwigsen, C. Andersen, O. Khan, S. 2023 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5016845 eng eng info:eu-repo/semantics/altIdentifier/doi/10.57757/IUGG23-0644 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5016845 XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) info:eu-repo/semantics/conferenceObject 2023 ftgfzpotsdam https://doi.org/10.57757/IUGG23-0644 2023-05-07T23:38:38Z The impact of elastic vertical land movement (VLM) on relative sea levels along the world's coastlines is significant. In Northern Europe, VLM is mainly due to the effect of Glacial Isostatic Adjustment (GIA). However, the rapid melting of ice in the Arctic is causing a substantial elastic uplift with both a local, but also a long-range footprint of 1000-3000 km from the point of ice loss. When VLM estimates from GNSS are unavailable, sea-level studies based on tide gauges often rely on a GIA-only VLM model to correct any ongoing uplift, but in Arctic regions, this can lead to underestimation of the uplift or overestimation of the absolute sea-level change due to significant changes in present-day ice loading (PDIL). Here, a high-resolution time-varying elastic VLM model (5x5 km) is developed from high-resolution estimates of glacial and Greenland Ice Sheet mass balance is presented. The elastic VLM model is combined with a GIA model to create a complete VLM model that is comparable with GNSS-measured VLM rates (in a center of mass frame). Additionally, far-field elastic effects from the Antarctic and Terrestrial Water Storage are included to create a complete vertical deformation map for the Northern Hemisphere, that can complement sea level studies in areas with few or no GNSS measurements. Conference Object Antarc* Antarctic Arctic Greenland Ice Sheet GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam) Arctic Antarctic The Antarctic Greenland |
institution |
Open Polar |
collection |
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam) |
op_collection_id |
ftgfzpotsdam |
language |
English |
description |
The impact of elastic vertical land movement (VLM) on relative sea levels along the world's coastlines is significant. In Northern Europe, VLM is mainly due to the effect of Glacial Isostatic Adjustment (GIA). However, the rapid melting of ice in the Arctic is causing a substantial elastic uplift with both a local, but also a long-range footprint of 1000-3000 km from the point of ice loss. When VLM estimates from GNSS are unavailable, sea-level studies based on tide gauges often rely on a GIA-only VLM model to correct any ongoing uplift, but in Arctic regions, this can lead to underestimation of the uplift or overestimation of the absolute sea-level change due to significant changes in present-day ice loading (PDIL). Here, a high-resolution time-varying elastic VLM model (5x5 km) is developed from high-resolution estimates of glacial and Greenland Ice Sheet mass balance is presented. The elastic VLM model is combined with a GIA model to create a complete VLM model that is comparable with GNSS-measured VLM rates (in a center of mass frame). Additionally, far-field elastic effects from the Antarctic and Terrestrial Water Storage are included to create a complete vertical deformation map for the Northern Hemisphere, that can complement sea level studies in areas with few or no GNSS measurements. |
format |
Conference Object |
author |
Ludwigsen, C. Andersen, O. Khan, S. |
spellingShingle |
Ludwigsen, C. Andersen, O. Khan, S. High-resolution modeling of dynamic vertical land movement in the Northern Hemisphere due to changing ice sheets and glaciers |
author_facet |
Ludwigsen, C. Andersen, O. Khan, S. |
author_sort |
Ludwigsen, C. |
title |
High-resolution modeling of dynamic vertical land movement in the Northern Hemisphere due to changing ice sheets and glaciers |
title_short |
High-resolution modeling of dynamic vertical land movement in the Northern Hemisphere due to changing ice sheets and glaciers |
title_full |
High-resolution modeling of dynamic vertical land movement in the Northern Hemisphere due to changing ice sheets and glaciers |
title_fullStr |
High-resolution modeling of dynamic vertical land movement in the Northern Hemisphere due to changing ice sheets and glaciers |
title_full_unstemmed |
High-resolution modeling of dynamic vertical land movement in the Northern Hemisphere due to changing ice sheets and glaciers |
title_sort |
high-resolution modeling of dynamic vertical land movement in the northern hemisphere due to changing ice sheets and glaciers |
publishDate |
2023 |
url |
https://gfzpublic.gfz-potsdam.de/pubman/item/item_5016845 |
geographic |
Arctic Antarctic The Antarctic Greenland |
geographic_facet |
Arctic Antarctic The Antarctic Greenland |
genre |
Antarc* Antarctic Arctic Greenland Ice Sheet |
genre_facet |
Antarc* Antarctic Arctic Greenland Ice Sheet |
op_source |
XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.57757/IUGG23-0644 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5016845 |
op_doi |
https://doi.org/10.57757/IUGG23-0644 |
_version_ |
1768386208470138880 |