Contemporary crustal movements in Canada
Our present knowledge of the patterns and causes of contemporary aseismic movements of the crust in Canada is reviewed. Modern and paleo water-level data and geodetic relevelling data are being used to delineate the regional pattern of vertical movements, but equivalent data on regional horizontal m...
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Canadian Science Publishing
1979
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crcansciencepubl:10.1139/e79-064 2023-12-17T10:31:47+01:00 Contemporary crustal movements in Canada Lambert, A. Vaníček, P. 1979 http://dx.doi.org/10.1139/e79-064 http://www.nrcresearchpress.com/doi/pdf/10.1139/e79-064 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Earth Sciences volume 16, issue 3, page 647-668 ISSN 0008-4077 1480-3313 General Earth and Planetary Sciences journal-article 1979 crcansciencepubl https://doi.org/10.1139/e79-064 2023-11-19T13:39:35Z Our present knowledge of the patterns and causes of contemporary aseismic movements of the crust in Canada is reviewed. Modern and paleo water-level data and geodetic relevelling data are being used to delineate the regional pattern of vertical movements, but equivalent data on regional horizontal movements are not yet available. The first steps are being taken to relate the emerging regional pattern of vertical movement in Canada to the interactions on the western margin of the America plate and to the spatial variations in seismicity, gravity field, and crustal stress in the plate interior. Viscoelastic modelling of the earth's response to surface loads, and laboratory-based results on possible non-linear rheologies in the mantle have provided a useful theoretical framework for comparing new data on ice-sheet histories with paleo water-level results. Local-scale crustal deformations are being monitored by triangulation, levelling, and gravity networks, as well as by tiltmeters, strainmeters and well-water-level meters. The interpretation of the local deformation data has been facilitated by modelling of the response of inhomogencous-elastic and porous-elastic media. The level of research activity on local aseismic movements in different areas of Canada corresponds to the seismotectonic significance of the areas. Article in Journal/Newspaper Ice Sheet Canadian Science Publishing (via Crossref) Canada Canadian Journal of Earth Sciences 16 3 647 668 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
General Earth and Planetary Sciences |
spellingShingle |
General Earth and Planetary Sciences Lambert, A. Vaníček, P. Contemporary crustal movements in Canada |
topic_facet |
General Earth and Planetary Sciences |
description |
Our present knowledge of the patterns and causes of contemporary aseismic movements of the crust in Canada is reviewed. Modern and paleo water-level data and geodetic relevelling data are being used to delineate the regional pattern of vertical movements, but equivalent data on regional horizontal movements are not yet available. The first steps are being taken to relate the emerging regional pattern of vertical movement in Canada to the interactions on the western margin of the America plate and to the spatial variations in seismicity, gravity field, and crustal stress in the plate interior. Viscoelastic modelling of the earth's response to surface loads, and laboratory-based results on possible non-linear rheologies in the mantle have provided a useful theoretical framework for comparing new data on ice-sheet histories with paleo water-level results. Local-scale crustal deformations are being monitored by triangulation, levelling, and gravity networks, as well as by tiltmeters, strainmeters and well-water-level meters. The interpretation of the local deformation data has been facilitated by modelling of the response of inhomogencous-elastic and porous-elastic media. The level of research activity on local aseismic movements in different areas of Canada corresponds to the seismotectonic significance of the areas. |
format |
Article in Journal/Newspaper |
author |
Lambert, A. Vaníček, P. |
author_facet |
Lambert, A. Vaníček, P. |
author_sort |
Lambert, A. |
title |
Contemporary crustal movements in Canada |
title_short |
Contemporary crustal movements in Canada |
title_full |
Contemporary crustal movements in Canada |
title_fullStr |
Contemporary crustal movements in Canada |
title_full_unstemmed |
Contemporary crustal movements in Canada |
title_sort |
contemporary crustal movements in canada |
publisher |
Canadian Science Publishing |
publishDate |
1979 |
url |
http://dx.doi.org/10.1139/e79-064 http://www.nrcresearchpress.com/doi/pdf/10.1139/e79-064 |
geographic |
Canada |
geographic_facet |
Canada |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_source |
Canadian Journal of Earth Sciences volume 16, issue 3, page 647-668 ISSN 0008-4077 1480-3313 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/e79-064 |
container_title |
Canadian Journal of Earth Sciences |
container_volume |
16 |
container_issue |
3 |
container_start_page |
647 |
op_container_end_page |
668 |
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1785585183658868736 |