Geodetic measurements of vertical crustal velocity in West Antarctica and the implications for ice mass balance
We present preliminary geodetic estimates for vertical bedrock velocity at twelve survey GPS stations in the West Antarctic GPS Network, an additional survey station in the northern Antarctic Peninsula, and eleven continuous GPS stations distributed across the continent. The spatial pattern of these...
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ftunivutrecht:oai:dspace.library.uu.nl:1874/43624 2023-07-23T04:15:05+02:00 Geodetic measurements of vertical crustal velocity in West Antarctica and the implications for ice mass balance Bevis, M. Kendrick, R. Smalley, R. Dalziel, I. Caccamise, D. Sasgen, I. Helsen, M.M. Taylor, F.W. Zhou, H. Brown, A. Raleigh, D. Willis, M. Wilson, T. Konfal, S. Marine and Atmospheric Research Sub Dynamics Meteorology 2009 image/pdf https://dspace.library.uu.nl/handle/1874/43624 other unknown 1525-2027 https://dspace.library.uu.nl/handle/1874/43624 info:eu-repo/semantics/OpenAccess International (English) Article 2009 ftunivutrecht 2023-07-01T23:39:21Z We present preliminary geodetic estimates for vertical bedrock velocity at twelve survey GPS stations in the West Antarctic GPS Network, an additional survey station in the northern Antarctic Peninsula, and eleven continuous GPS stations distributed across the continent. The spatial pattern of these velocities is not consistent with any postglacial rebound (PGR) model known to us. Four leading PGR models appear to be overpredicting uplift rates in the Transantarctic Mountains and West Antarctica and underpredicting them in the peninsula north of 65 . This discrepancy cannot be explained in terms of an elastic response to modern ice loss (except, perhaps, in part of the peninsula). Therefore, our initial geodetic results suggest that most GRACE ice mass rate estimates, which are critically dependent on a PGR correction, are systematically biased and are overpredicting ice loss for the continent as a whole Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica West Antarctica Utrecht University Repository Antarctic Antarctic Peninsula Transantarctic Mountains West Antarctica |
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Utrecht University Repository |
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International (English) |
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International (English) Bevis, M. Kendrick, R. Smalley, R. Dalziel, I. Caccamise, D. Sasgen, I. Helsen, M.M. Taylor, F.W. Zhou, H. Brown, A. Raleigh, D. Willis, M. Wilson, T. Konfal, S. Geodetic measurements of vertical crustal velocity in West Antarctica and the implications for ice mass balance |
topic_facet |
International (English) |
description |
We present preliminary geodetic estimates for vertical bedrock velocity at twelve survey GPS stations in the West Antarctic GPS Network, an additional survey station in the northern Antarctic Peninsula, and eleven continuous GPS stations distributed across the continent. The spatial pattern of these velocities is not consistent with any postglacial rebound (PGR) model known to us. Four leading PGR models appear to be overpredicting uplift rates in the Transantarctic Mountains and West Antarctica and underpredicting them in the peninsula north of 65 . This discrepancy cannot be explained in terms of an elastic response to modern ice loss (except, perhaps, in part of the peninsula). Therefore, our initial geodetic results suggest that most GRACE ice mass rate estimates, which are critically dependent on a PGR correction, are systematically biased and are overpredicting ice loss for the continent as a whole |
author2 |
Marine and Atmospheric Research Sub Dynamics Meteorology |
format |
Article in Journal/Newspaper |
author |
Bevis, M. Kendrick, R. Smalley, R. Dalziel, I. Caccamise, D. Sasgen, I. Helsen, M.M. Taylor, F.W. Zhou, H. Brown, A. Raleigh, D. Willis, M. Wilson, T. Konfal, S. |
author_facet |
Bevis, M. Kendrick, R. Smalley, R. Dalziel, I. Caccamise, D. Sasgen, I. Helsen, M.M. Taylor, F.W. Zhou, H. Brown, A. Raleigh, D. Willis, M. Wilson, T. Konfal, S. |
author_sort |
Bevis, M. |
title |
Geodetic measurements of vertical crustal velocity in West Antarctica and the implications for ice mass balance |
title_short |
Geodetic measurements of vertical crustal velocity in West Antarctica and the implications for ice mass balance |
title_full |
Geodetic measurements of vertical crustal velocity in West Antarctica and the implications for ice mass balance |
title_fullStr |
Geodetic measurements of vertical crustal velocity in West Antarctica and the implications for ice mass balance |
title_full_unstemmed |
Geodetic measurements of vertical crustal velocity in West Antarctica and the implications for ice mass balance |
title_sort |
geodetic measurements of vertical crustal velocity in west antarctica and the implications for ice mass balance |
publishDate |
2009 |
url |
https://dspace.library.uu.nl/handle/1874/43624 |
geographic |
Antarctic Antarctic Peninsula Transantarctic Mountains West Antarctica |
geographic_facet |
Antarctic Antarctic Peninsula Transantarctic Mountains West Antarctica |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica West Antarctica |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica West Antarctica |
op_relation |
1525-2027 https://dspace.library.uu.nl/handle/1874/43624 |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1772189092059021312 |