Prolonged post-seismic deformation of the 1960 great Chile earthquake and implications for mantle rheology

Contemporary crustal deformation of the southern Andean margin shows an interesting feature: While nearly all coastal GPS sites move landward, consistent with interseismic deformation near a locked subduction fault, sites 300-400 km landward of the rupture region of the M-w 9.5 1960 Chile earthquake...

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Detalhes bibliográficos
Autores: Khazaradze, Giorgi, Wang, K., Klotz, J., Hu, Y., He, J.
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2002
País:España
Recursos:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/163191
Acesso em linha:https://hdl.handle.net/2445/163191
Access Level:acceso abierto
Palavra-chave:Subducció
Terratrèmols
Xile
Subduction
Earthquakes
Chile
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repository_id_str
spelling Prolonged post-seismic deformation of the 1960 great Chile earthquake and implications for mantle rheologyKhazaradze, GiorgiWang, K.Klotz, J.Hu, Y.He, J.SubduccióTerratrèmolsXileSubductionEarthquakesChileContemporary crustal deformation of the southern Andean margin shows an interesting feature: While nearly all coastal GPS sites move landward, consistent with interseismic deformation near a locked subduction fault, sites 300-400 km landward of the rupture region of the M-w 9.5 1960 Chile earthquake are moving in the opposite direction. We attribute the seaward motion of these inland sites to a prolonged crustal deformation due to mantle stress relaxation following the 1960 great earthquake. In order to reproduce the observed seaward motion using a three-dimensional finite element model we need to incorporate a mantle viscosity of about 3 x 10(19) Pa s. The possibility that the seaward motion is caused by a silent slip event on the plate interface at large depths cannot be completely excluded, and our analysis provides a working model for future field tests.American Geophysical Union (AGU)2020202020022020info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion4 p.application/pdfhttps://hdl.handle.net/2445/163191Articles publicats en revistes (Dinàmica de la Terra i l'Oceà)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésReproducció del document publicat a:Geophysical Research Letters, 2002, vol. 29, num. 22, p. 2050-2053(c) American Geophysical Union (AGU), 2002info:eu-repo/semantics/openAccessoai:recercat.cat:2445/1631912026-05-29T05:05:01Z
dc.title.none.fl_str_mv Prolonged post-seismic deformation of the 1960 great Chile earthquake and implications for mantle rheology
title Prolonged post-seismic deformation of the 1960 great Chile earthquake and implications for mantle rheology
spellingShingle Prolonged post-seismic deformation of the 1960 great Chile earthquake and implications for mantle rheology
Khazaradze, Giorgi
Subducció
Terratrèmols
Xile
Subduction
Earthquakes
Chile
title_short Prolonged post-seismic deformation of the 1960 great Chile earthquake and implications for mantle rheology
title_full Prolonged post-seismic deformation of the 1960 great Chile earthquake and implications for mantle rheology
title_fullStr Prolonged post-seismic deformation of the 1960 great Chile earthquake and implications for mantle rheology
title_full_unstemmed Prolonged post-seismic deformation of the 1960 great Chile earthquake and implications for mantle rheology
title_sort Prolonged post-seismic deformation of the 1960 great Chile earthquake and implications for mantle rheology
dc.creator.none.fl_str_mv Khazaradze, Giorgi
Wang, K.
Klotz, J.
Hu, Y.
He, J.
author Khazaradze, Giorgi
author_facet Khazaradze, Giorgi
Wang, K.
Klotz, J.
Hu, Y.
He, J.
author_role author
author2 Wang, K.
Klotz, J.
Hu, Y.
He, J.
author2_role author
author
author
author
dc.subject.none.fl_str_mv Subducció
Terratrèmols
Xile
Subduction
Earthquakes
Chile
topic Subducció
Terratrèmols
Xile
Subduction
Earthquakes
Chile
description Contemporary crustal deformation of the southern Andean margin shows an interesting feature: While nearly all coastal GPS sites move landward, consistent with interseismic deformation near a locked subduction fault, sites 300-400 km landward of the rupture region of the M-w 9.5 1960 Chile earthquake are moving in the opposite direction. We attribute the seaward motion of these inland sites to a prolonged crustal deformation due to mantle stress relaxation following the 1960 great earthquake. In order to reproduce the observed seaward motion using a three-dimensional finite element model we need to incorporate a mantle viscosity of about 3 x 10(19) Pa s. The possibility that the seaward motion is caused by a silent slip event on the plate interface at large depths cannot be completely excluded, and our analysis provides a working model for future field tests.
publishDate 2002
dc.date.none.fl_str_mv 2002
2020
2020
2020
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/163191
url https://hdl.handle.net/2445/163191
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a:
Geophysical Research Letters, 2002, vol. 29, num. 22, p. 2050-2053
dc.rights.none.fl_str_mv (c) American Geophysical Union (AGU), 2002
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) American Geophysical Union (AGU), 2002
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 4 p.
application/pdf
dc.publisher.none.fl_str_mv American Geophysical Union (AGU)
publisher.none.fl_str_mv American Geophysical Union (AGU)
dc.source.none.fl_str_mv Articles publicats en revistes (Dinàmica de la Terra i l'Oceà)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,811543

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