No Significant Effect of Coulomb Stress on the Gutenberg-Richter Law after the Landers Earthquake

Coulomb-stress theory has been used for years in seismology to understand how earthquakes trigger each other. Whenever an earthquake occurs, the stress field changes, and places with positive increases are brought closer to failure. Earthquake models that relate earthquake rates and Coulomb stress a...

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Detalhes bibliográficos
Autores: Navas-Portella, V., Jiménez, A., Corral, Á.
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2020
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:2072/446132
Acesso em linha:http://hdl.handle.net/2072/446132
Access Level:acceso abierto
Palavra-chave:51
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spelling No Significant Effect of Coulomb Stress on the Gutenberg-Richter Law after the Landers EarthquakeNavas-Portella, V.Jiménez, A.Corral, Á.51Coulomb-stress theory has been used for years in seismology to understand how earthquakes trigger each other. Whenever an earthquake occurs, the stress field changes, and places with positive increases are brought closer to failure. Earthquake models that relate earthquake rates and Coulomb stress after a main event, such as the rate-and-state model, assume that the magnitude distribution of earthquakes is not affected by the change in the Coulomb stress. By using different slip models, we calculate the change in Coulomb stress in the fault plane for every aftershock after the Landers event (California, USA, 1992, moment magnitude 7.3). Applying several statistical analyses to test whether the distribution of magnitudes is sensitive to the sign of the Coulomb-stress increase, we are not able to find any significant effect. Further, whereas the events with a positive increase of the stress are characterized by a much larger proportion of strike-slip events in comparison with the seismicity previous to the mainshock, the events happening despite a decrease in Coulomb stress show no relevant differences in focal-mechanism distribution with respect to previous seismicity. © 2020, The Author(s).Nature Research2020info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion13 p.application/pdfhttp://hdl.handle.net/2072/446132RECERCAT (Dipòsit de la Recerca de Catalunya)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)Inglésinfo:eu-repo/semantics/openAccessoai:recercat.cat:2072/4461322026-05-29T05:05:01Z
dc.title.none.fl_str_mv No Significant Effect of Coulomb Stress on the Gutenberg-Richter Law after the Landers Earthquake
title No Significant Effect of Coulomb Stress on the Gutenberg-Richter Law after the Landers Earthquake
spellingShingle No Significant Effect of Coulomb Stress on the Gutenberg-Richter Law after the Landers Earthquake
Navas-Portella, V.
51
title_short No Significant Effect of Coulomb Stress on the Gutenberg-Richter Law after the Landers Earthquake
title_full No Significant Effect of Coulomb Stress on the Gutenberg-Richter Law after the Landers Earthquake
title_fullStr No Significant Effect of Coulomb Stress on the Gutenberg-Richter Law after the Landers Earthquake
title_full_unstemmed No Significant Effect of Coulomb Stress on the Gutenberg-Richter Law after the Landers Earthquake
title_sort No Significant Effect of Coulomb Stress on the Gutenberg-Richter Law after the Landers Earthquake
dc.creator.none.fl_str_mv Navas-Portella, V.
Jiménez, A.
Corral, Á.
author Navas-Portella, V.
author_facet Navas-Portella, V.
Jiménez, A.
Corral, Á.
author_role author
author2 Jiménez, A.
Corral, Á.
author2_role author
author
dc.subject.none.fl_str_mv 51
topic 51
description Coulomb-stress theory has been used for years in seismology to understand how earthquakes trigger each other. Whenever an earthquake occurs, the stress field changes, and places with positive increases are brought closer to failure. Earthquake models that relate earthquake rates and Coulomb stress after a main event, such as the rate-and-state model, assume that the magnitude distribution of earthquakes is not affected by the change in the Coulomb stress. By using different slip models, we calculate the change in Coulomb stress in the fault plane for every aftershock after the Landers event (California, USA, 1992, moment magnitude 7.3). Applying several statistical analyses to test whether the distribution of magnitudes is sensitive to the sign of the Coulomb-stress increase, we are not able to find any significant effect. Further, whereas the events with a positive increase of the stress are characterized by a much larger proportion of strike-slip events in comparison with the seismicity previous to the mainshock, the events happening despite a decrease in Coulomb stress show no relevant differences in focal-mechanism distribution with respect to previous seismicity. © 2020, The Author(s).
publishDate 2020
dc.date.none.fl_str_mv 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 http://hdl.handle.net/2072/446132
url http://hdl.handle.net/2072/446132
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 13 p.
application/pdf
dc.publisher.none.fl_str_mv Nature Research
publisher.none.fl_str_mv Nature Research
dc.source.none.fl_str_mv RECERCAT (Dipòsit de la Recerca de Catalunya)
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
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