Space-Geodetic Constraints on Glacial Isostatic Adjustment in Fennoscandia
Analysis of Global Positioning System (GPS) data demonstrates that ongoing three-dimensional crustal deformation in Fennoscandia is dominated by glacial isostatic adjustment. Our comparison of these GPS observations with numerical predictions yields an Earth model that satisÞes independent geologic...
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ftchalmersuniv:oai:research.chalmers.se:197900 2023-05-15T16:11:36+02:00 Space-Geodetic Constraints on Glacial Isostatic Adjustment in Fennoscandia Milne, Glenn A. Davis, James L. Mitrovica, Jerry X. Scherneck, Hans-Georg Johansson, Jan Vermeer, Martin Koivula, Hannu 2001 text https://research.chalmers.se/en/publication/197900 unknown https://research.chalmers.se/en/publication/197900 Geophysics 2001 ftchalmersuniv 2022-12-11T07:02:54Z Analysis of Global Positioning System (GPS) data demonstrates that ongoing three-dimensional crustal deformation in Fennoscandia is dominated by glacial isostatic adjustment. Our comparison of these GPS observations with numerical predictions yields an Earth model that satisÞes independent geologic constraints and bounds both the average viscosity in the upper mantle (5 x 10^20 to 1 x 10^21 pascal seconds) and the elastic thickness of the lithosphere (90 to 170 kilometers). We combined GPS-derived radial motions with Fennoscandian tide gauge records to estimate a regional sea surface rise of 2.1 +- 0.3 mm/year. Furthermore, ongoing horizontal tectonic motions greater than ~1 mm/year are ruled out on the basis of the GPS-derived three-dimensional crustal velocity field. Other/Unknown Material Fennoscandia Fennoscandian Chalmers University of Technology: Chalmers research |
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Open Polar |
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Chalmers University of Technology: Chalmers research |
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ftchalmersuniv |
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unknown |
topic |
Geophysics |
spellingShingle |
Geophysics Milne, Glenn A. Davis, James L. Mitrovica, Jerry X. Scherneck, Hans-Georg Johansson, Jan Vermeer, Martin Koivula, Hannu Space-Geodetic Constraints on Glacial Isostatic Adjustment in Fennoscandia |
topic_facet |
Geophysics |
description |
Analysis of Global Positioning System (GPS) data demonstrates that ongoing three-dimensional crustal deformation in Fennoscandia is dominated by glacial isostatic adjustment. Our comparison of these GPS observations with numerical predictions yields an Earth model that satisÞes independent geologic constraints and bounds both the average viscosity in the upper mantle (5 x 10^20 to 1 x 10^21 pascal seconds) and the elastic thickness of the lithosphere (90 to 170 kilometers). We combined GPS-derived radial motions with Fennoscandian tide gauge records to estimate a regional sea surface rise of 2.1 +- 0.3 mm/year. Furthermore, ongoing horizontal tectonic motions greater than ~1 mm/year are ruled out on the basis of the GPS-derived three-dimensional crustal velocity field. |
author |
Milne, Glenn A. Davis, James L. Mitrovica, Jerry X. Scherneck, Hans-Georg Johansson, Jan Vermeer, Martin Koivula, Hannu |
author_facet |
Milne, Glenn A. Davis, James L. Mitrovica, Jerry X. Scherneck, Hans-Georg Johansson, Jan Vermeer, Martin Koivula, Hannu |
author_sort |
Milne, Glenn A. |
title |
Space-Geodetic Constraints on Glacial Isostatic Adjustment in Fennoscandia |
title_short |
Space-Geodetic Constraints on Glacial Isostatic Adjustment in Fennoscandia |
title_full |
Space-Geodetic Constraints on Glacial Isostatic Adjustment in Fennoscandia |
title_fullStr |
Space-Geodetic Constraints on Glacial Isostatic Adjustment in Fennoscandia |
title_full_unstemmed |
Space-Geodetic Constraints on Glacial Isostatic Adjustment in Fennoscandia |
title_sort |
space-geodetic constraints on glacial isostatic adjustment in fennoscandia |
publishDate |
2001 |
url |
https://research.chalmers.se/en/publication/197900 |
genre |
Fennoscandia Fennoscandian |
genre_facet |
Fennoscandia Fennoscandian |
op_relation |
https://research.chalmers.se/en/publication/197900 |
_version_ |
1765996755237732352 |