Grid files of the total isostatic response to the complete unloading of the Greenland and Antarctic Ice Sheets (version 1)
The land surface beneath the Greenland and Antarctic Ice Sheets is isostatically suppressed by the mass of the overlying ice. Accurate computation of the land elevation in the absence of ice is important when considering, for example, regional geodynamics, geomorphology, and ice sheet behaviour. Her...
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Arctic Data Center
2022
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Online Access: | https://doi.org/10.18739/A2280509Z |
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dataone:doi:10.18739/A2280509Z 2023-11-08T14:14:13+01:00 Grid files of the total isostatic response to the complete unloading of the Greenland and Antarctic Ice Sheets (version 1) Guy Paxman Jacqueline Austermann Andrew Hollyday Greenland Antarctica ENVELOPE(-80.0,-10.0,85.0,55.0) BEGINDATE: 2022-06-09T00:00:00Z ENDDATE: 2022-06-09T00:00:00Z 2022-06-09T00:00:00Z https://doi.org/10.18739/A2280509Z unknown Arctic Data Center Ice sheet thickness Flexural isostasy Deglaciation Bed topography Dataset 2022 dataone:urn:node:ARCTIC https://doi.org/10.18739/A2280509Z 2023-11-08T13:47:48Z The land surface beneath the Greenland and Antarctic Ice Sheets is isostatically suppressed by the mass of the overlying ice. Accurate computation of the land elevation in the absence of ice is important when considering, for example, regional geodynamics, geomorphology, and ice sheet behaviour. Here, we use contemporary compilations of ice thickness and lithospheric effective elastic thickness to calculate the fully re-equilibrated isostatic response of the solid Earth to the complete removal of the Greenland and Antarctic Ice Sheets. We use an elastic plate flexure model to compute the isostatic response to the unloading of the modern ice sheet loads, and a self-gravitating viscoelastic Earth model to make an adjustment for the remaining isostatic disequilibrium driven by ice mass loss since the Last Glacial Maximum. Feedbacks arising from water loading in areas situated below sea level after ice sheet removal are also taken into account. In addition, we quantify the uncertainties in the total isostatic response associated with a range of elastic and viscoelastic Earth properties. The computed isostatic response grids are provided in NetCDF format and have a number of applications for studying regional geodynamics, landscape evolution, cryosphere dynamics, and relative sea level change. Dataset Antarc* Antarctic Antarctica Greenland Ice Sheet Arctic Data Center (via DataONE) Antarctic Greenland ENVELOPE(-80.0,-10.0,85.0,55.0) |
institution |
Open Polar |
collection |
Arctic Data Center (via DataONE) |
op_collection_id |
dataone:urn:node:ARCTIC |
language |
unknown |
topic |
Ice sheet thickness Flexural isostasy Deglaciation Bed topography |
spellingShingle |
Ice sheet thickness Flexural isostasy Deglaciation Bed topography Guy Paxman Jacqueline Austermann Andrew Hollyday Grid files of the total isostatic response to the complete unloading of the Greenland and Antarctic Ice Sheets (version 1) |
topic_facet |
Ice sheet thickness Flexural isostasy Deglaciation Bed topography |
description |
The land surface beneath the Greenland and Antarctic Ice Sheets is isostatically suppressed by the mass of the overlying ice. Accurate computation of the land elevation in the absence of ice is important when considering, for example, regional geodynamics, geomorphology, and ice sheet behaviour. Here, we use contemporary compilations of ice thickness and lithospheric effective elastic thickness to calculate the fully re-equilibrated isostatic response of the solid Earth to the complete removal of the Greenland and Antarctic Ice Sheets. We use an elastic plate flexure model to compute the isostatic response to the unloading of the modern ice sheet loads, and a self-gravitating viscoelastic Earth model to make an adjustment for the remaining isostatic disequilibrium driven by ice mass loss since the Last Glacial Maximum. Feedbacks arising from water loading in areas situated below sea level after ice sheet removal are also taken into account. In addition, we quantify the uncertainties in the total isostatic response associated with a range of elastic and viscoelastic Earth properties. The computed isostatic response grids are provided in NetCDF format and have a number of applications for studying regional geodynamics, landscape evolution, cryosphere dynamics, and relative sea level change. |
format |
Dataset |
author |
Guy Paxman Jacqueline Austermann Andrew Hollyday |
author_facet |
Guy Paxman Jacqueline Austermann Andrew Hollyday |
author_sort |
Guy Paxman |
title |
Grid files of the total isostatic response to the complete unloading of the Greenland and Antarctic Ice Sheets (version 1) |
title_short |
Grid files of the total isostatic response to the complete unloading of the Greenland and Antarctic Ice Sheets (version 1) |
title_full |
Grid files of the total isostatic response to the complete unloading of the Greenland and Antarctic Ice Sheets (version 1) |
title_fullStr |
Grid files of the total isostatic response to the complete unloading of the Greenland and Antarctic Ice Sheets (version 1) |
title_full_unstemmed |
Grid files of the total isostatic response to the complete unloading of the Greenland and Antarctic Ice Sheets (version 1) |
title_sort |
grid files of the total isostatic response to the complete unloading of the greenland and antarctic ice sheets (version 1) |
publisher |
Arctic Data Center |
publishDate |
2022 |
url |
https://doi.org/10.18739/A2280509Z |
op_coverage |
Greenland Antarctica ENVELOPE(-80.0,-10.0,85.0,55.0) BEGINDATE: 2022-06-09T00:00:00Z ENDDATE: 2022-06-09T00:00:00Z |
long_lat |
ENVELOPE(-80.0,-10.0,85.0,55.0) |
geographic |
Antarctic Greenland |
geographic_facet |
Antarctic Greenland |
genre |
Antarc* Antarctic Antarctica Greenland Ice Sheet |
genre_facet |
Antarc* Antarctic Antarctica Greenland Ice Sheet |
op_doi |
https://doi.org/10.18739/A2280509Z |
_version_ |
1782011971459088384 |