The signatures of tectonics and glacial isostatic adjustment revealed by the strain rate in Europe
Tectonics and glacial isostatic adjustment (GIA) are simultaneously taken into account in order to quantitatively define their role in crustal deformation in Europe. A spherical finite-element model, based on the thin viscous shell approach and suitable for predicting tectonic deformation, and a sph...
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fthighwire:oai:open-archive.highwire.org:gji:157/2/865 2023-05-15T16:11:58+02:00 The signatures of tectonics and glacial isostatic adjustment revealed by the strain rate in Europe Maria Marotta, Anna Sabadini, Roberto 2004-05-01 00:00:00.0 text/html http://gji.oxfordjournals.org/cgi/content/short/157/2/865 https://doi.org/10.1111/j.1365-246X.2004.02275.x en eng Oxford University Press http://gji.oxfordjournals.org/cgi/content/short/157/2/865 http://dx.doi.org/10.1111/j.1365-246X.2004.02275.x Copyright (C) 2004, Oxford University Press Tectonics and Geodynamics TEXT 2004 fthighwire https://doi.org/10.1111/j.1365-246X.2004.02275.x 2013-05-27T01:20:55Z Tectonics and glacial isostatic adjustment (GIA) are simultaneously taken into account in order to quantitatively define their role in crustal deformation in Europe. A spherical finite-element model, based on the thin viscous shell approach and suitable for predicting tectonic deformation, and a spherical stratified viscoelastic Earth model, based on the normal mode approach to quantifying the effects of GIA, are used to predict intraplate deformation in Europe. Model predictions are compared with the geodetic strain rate obtained from ITRF2000 velocity solutions. Our results confirm that both geophysical processes influence intraplate deformation in Europe, with tectonics playing the leading role south of Potsdam and GIA being the only mechanism north of Onsala. Both geophysical processes affect the deformation at intermediate latitudes, where the contributions to the deformation coming from tectonics and GIA are of the same magnitude and the combined tectonic plus GIA model succeeds in reproducing the eigendirections of the local predominantly SSW–NNE directed compression. The stiffening in the East European Platform is crucial for shielding the northeastern regions from the compressional effects of Africa–Eurasia convergence and to allow SE–NW directed extension in Fennoscandia driven by GIA. Text Fennoscandia HighWire Press (Stanford University) Geophysical Journal International 157 2 865 870 |
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Open Polar |
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HighWire Press (Stanford University) |
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language |
English |
topic |
Tectonics and Geodynamics |
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Tectonics and Geodynamics Maria Marotta, Anna Sabadini, Roberto The signatures of tectonics and glacial isostatic adjustment revealed by the strain rate in Europe |
topic_facet |
Tectonics and Geodynamics |
description |
Tectonics and glacial isostatic adjustment (GIA) are simultaneously taken into account in order to quantitatively define their role in crustal deformation in Europe. A spherical finite-element model, based on the thin viscous shell approach and suitable for predicting tectonic deformation, and a spherical stratified viscoelastic Earth model, based on the normal mode approach to quantifying the effects of GIA, are used to predict intraplate deformation in Europe. Model predictions are compared with the geodetic strain rate obtained from ITRF2000 velocity solutions. Our results confirm that both geophysical processes influence intraplate deformation in Europe, with tectonics playing the leading role south of Potsdam and GIA being the only mechanism north of Onsala. Both geophysical processes affect the deformation at intermediate latitudes, where the contributions to the deformation coming from tectonics and GIA are of the same magnitude and the combined tectonic plus GIA model succeeds in reproducing the eigendirections of the local predominantly SSW–NNE directed compression. The stiffening in the East European Platform is crucial for shielding the northeastern regions from the compressional effects of Africa–Eurasia convergence and to allow SE–NW directed extension in Fennoscandia driven by GIA. |
format |
Text |
author |
Maria Marotta, Anna Sabadini, Roberto |
author_facet |
Maria Marotta, Anna Sabadini, Roberto |
author_sort |
Maria Marotta, Anna |
title |
The signatures of tectonics and glacial isostatic adjustment revealed by the strain rate in Europe |
title_short |
The signatures of tectonics and glacial isostatic adjustment revealed by the strain rate in Europe |
title_full |
The signatures of tectonics and glacial isostatic adjustment revealed by the strain rate in Europe |
title_fullStr |
The signatures of tectonics and glacial isostatic adjustment revealed by the strain rate in Europe |
title_full_unstemmed |
The signatures of tectonics and glacial isostatic adjustment revealed by the strain rate in Europe |
title_sort |
signatures of tectonics and glacial isostatic adjustment revealed by the strain rate in europe |
publisher |
Oxford University Press |
publishDate |
2004 |
url |
http://gji.oxfordjournals.org/cgi/content/short/157/2/865 https://doi.org/10.1111/j.1365-246X.2004.02275.x |
genre |
Fennoscandia |
genre_facet |
Fennoscandia |
op_relation |
http://gji.oxfordjournals.org/cgi/content/short/157/2/865 http://dx.doi.org/10.1111/j.1365-246X.2004.02275.x |
op_rights |
Copyright (C) 2004, Oxford University Press |
op_doi |
https://doi.org/10.1111/j.1365-246X.2004.02275.x |
container_title |
Geophysical Journal International |
container_volume |
157 |
container_issue |
2 |
container_start_page |
865 |
op_container_end_page |
870 |
_version_ |
1765997191969636352 |