Geodetic constraints on glacial isostatic adjustment in Europe
Direct measurements of surface deformation due to Glacial Isostatic Adjustment (GIA) in Europe have been so far mostly limited to the present-day uplift area. Here, we use permanent GPS networks results to investigate the significance of GIA effects in Europe south of Fennoscandia. We show that upli...
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Language: | English |
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Online Access: | https://doi.org/10.1029/2004GL022174 https://ora.ox.ac.uk/objects/uuid:4ea269dd-b0c6-4ad9-bfd9-57fc1f657fd2 |
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ftuloxford:oai:ora.ox.ac.uk:uuid:4ea269dd-b0c6-4ad9-bfd9-57fc1f657fd2 2023-05-15T16:11:27+02:00 Geodetic constraints on glacial isostatic adjustment in Europe Nocquet, J Calais, E Parsons, B 2016-07-28 https://doi.org/10.1029/2004GL022174 https://ora.ox.ac.uk/objects/uuid:4ea269dd-b0c6-4ad9-bfd9-57fc1f657fd2 eng eng doi:10.1029/2004GL022174 https://ora.ox.ac.uk/objects/uuid:4ea269dd-b0c6-4ad9-bfd9-57fc1f657fd2 https://doi.org/10.1029/2004GL022174 info:eu-repo/semantics/embargoedAccess Journal article 2016 ftuloxford https://doi.org/10.1029/2004GL022174 2022-06-28T20:11:56Z Direct measurements of surface deformation due to Glacial Isostatic Adjustment (GIA) in Europe have been so far mostly limited to the present-day uplift area. Here, we use permanent GPS networks results to investigate the significance of GIA effects in Europe south of Fennoscandia. We show that uplift in Fennoscandia is surrounded by subsidence reaching as far south as the Alps, with a maximum vertical rate of 1.5 mm/yr between 50.5 - 53°N. Horizontal velocity gradients show shortening between Fennoscandia and north-central Europe with strain rates of ∼10-9 yr-1 and principal compressional strain axis pointing to the Gulf of Bothnia in a radial pattern. We find a very good quantitative agreement with the 3D surface displacement predicted by Milne et al. (2001), although the increase of misfit in far-field of Fennoscandia suggests that geodetic data outside of the uplift area may bring additional constraints to the rheological parameters used in GIA models. Copyright 2005 by the American Geophysical Union. Article in Journal/Newspaper Fennoscandia ORA - Oxford University Research Archive Geophysical Research Letters 32 6 |
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Open Polar |
collection |
ORA - Oxford University Research Archive |
op_collection_id |
ftuloxford |
language |
English |
description |
Direct measurements of surface deformation due to Glacial Isostatic Adjustment (GIA) in Europe have been so far mostly limited to the present-day uplift area. Here, we use permanent GPS networks results to investigate the significance of GIA effects in Europe south of Fennoscandia. We show that uplift in Fennoscandia is surrounded by subsidence reaching as far south as the Alps, with a maximum vertical rate of 1.5 mm/yr between 50.5 - 53°N. Horizontal velocity gradients show shortening between Fennoscandia and north-central Europe with strain rates of ∼10-9 yr-1 and principal compressional strain axis pointing to the Gulf of Bothnia in a radial pattern. We find a very good quantitative agreement with the 3D surface displacement predicted by Milne et al. (2001), although the increase of misfit in far-field of Fennoscandia suggests that geodetic data outside of the uplift area may bring additional constraints to the rheological parameters used in GIA models. Copyright 2005 by the American Geophysical Union. |
format |
Article in Journal/Newspaper |
author |
Nocquet, J Calais, E Parsons, B |
spellingShingle |
Nocquet, J Calais, E Parsons, B Geodetic constraints on glacial isostatic adjustment in Europe |
author_facet |
Nocquet, J Calais, E Parsons, B |
author_sort |
Nocquet, J |
title |
Geodetic constraints on glacial isostatic adjustment in Europe |
title_short |
Geodetic constraints on glacial isostatic adjustment in Europe |
title_full |
Geodetic constraints on glacial isostatic adjustment in Europe |
title_fullStr |
Geodetic constraints on glacial isostatic adjustment in Europe |
title_full_unstemmed |
Geodetic constraints on glacial isostatic adjustment in Europe |
title_sort |
geodetic constraints on glacial isostatic adjustment in europe |
publishDate |
2016 |
url |
https://doi.org/10.1029/2004GL022174 https://ora.ox.ac.uk/objects/uuid:4ea269dd-b0c6-4ad9-bfd9-57fc1f657fd2 |
genre |
Fennoscandia |
genre_facet |
Fennoscandia |
op_relation |
doi:10.1029/2004GL022174 https://ora.ox.ac.uk/objects/uuid:4ea269dd-b0c6-4ad9-bfd9-57fc1f657fd2 https://doi.org/10.1029/2004GL022174 |
op_rights |
info:eu-repo/semantics/embargoedAccess |
op_doi |
https://doi.org/10.1029/2004GL022174 |
container_title |
Geophysical Research Letters |
container_volume |
32 |
container_issue |
6 |
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1765996587915411456 |