Stress drops for foreshocks and aftershocks of the 1979 Petatlán, Mexico, earthquake

Stress drops for foreshocks and aftershocks (3.5 ~ ML ~ 4.0) of the 1979 Petatlan, Mexico, earthquake (Ms = 7.6) were examined with the purpose of understanding the mechanical properties of rock and the failure process of a very Young subduction zone. The static stress drop was calculated by estimat...

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Detalles Bibliográficos
Autor: Novelo Casanova, D. A.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:1991
País:México
Institución:UNIVERSIDAD NACIONAL AUTÓNOMA DE MÉXICO
Repositorio:Geofísica Internacional
Idioma:español
OAI Identifier:oai:revistagi.geofisica.unam.mx:article/1195
Acceso en línea:http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/1195
Access Level:acceso abierto
Palabra clave:Caída de esfuerzos
Premonitores
Réplicas
Temblor de Petatlan
Stress drops
Foreshocks
Aftershocks
Petatlan earthquake
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spelling Stress drops for foreshocks and aftershocks of the 1979 Petatlán, Mexico, earthquakeStress drops for foreshocks and aftershocks of the 1979 Petatlán, Mexico, earthquakeNovelo Casanova, D. A.Caída de esfuerzosPremonitoresRéplicasTemblor de PetatlanStress dropsForeshocksAftershocksPetatlan earthquakeStress drops for foreshocks and aftershocks (3.5 ~ ML ~ 4.0) of the 1979 Petatlan, Mexico, earthquake (Ms = 7.6) were examined with the purpose of understanding the mechanical properties of rock and the failure process of a very Young subduction zone. The static stress drop was calculated by estimating the source dimension from the width of the P-wave half-cycle and the seismic moment from a moment-magnitude relation appropriate to the region. Values of stress drop indicate an irregular distribution throughout the aftershock zone and support a two-asperity model in the source area.Las caídas de esfuerzos de premonitores y replicas (3.5 ~ ML ~ 4.0) del temblor de Petatlán (Ms = 7.6) ocurrido en México en 1979, fueron examinadas con el propósito de obtener un mejor conocimiento de las propiedades mecánicas del material y del proceso de ruptura existente en una zona de subduccion bastante joven. Los esfuerzos fueron calculados estimándose la dimensión de la fuente a partir de la anchura del medio ciclo de la onda P y del momento sísmico obtenido a partir de una formula empírica apropiada para la región. Los resultados indican una distribución irregular de esfuerzos en toda el área de replicas y proporcionan evidencias que apoyan un modelo de dos asperidades en la fuente.Universidad Nacional Autónoma de México. Instituto de Geofísica1991-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://revistagi.geofisica.unam.mx/index.php/RGI/article/view/119510.22201/igeof.00167169p.1991.30.1.948Geofisica Internacional; Vol. 30 No. 1 (1991): January 1, 1991; 43-54Geofísica Internacional; Vol. 30 Núm. 1 (1991): Enero 1, 1991; 43-542954-436X0016-716910.22201/igeof.00167169p.1991.30.1reponame:Geofísica Internacionalinstname:UNIVERSIDAD NACIONAL AUTÓNOMA DE MÉXICOinstacron:UNAMspahttp://revistagi.geofisica.unam.mx/index.php/RGI/article/view/1195/1131https://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:revistagi.geofisica.unam.mx:article/11952024-08-16T17:32:06Z
dc.title.none.fl_str_mv Stress drops for foreshocks and aftershocks of the 1979 Petatlán, Mexico, earthquake
Stress drops for foreshocks and aftershocks of the 1979 Petatlán, Mexico, earthquake
title Stress drops for foreshocks and aftershocks of the 1979 Petatlán, Mexico, earthquake
spellingShingle Stress drops for foreshocks and aftershocks of the 1979 Petatlán, Mexico, earthquake
Novelo Casanova, D. A.
Caída de esfuerzos
Premonitores
Réplicas
Temblor de Petatlan
Stress drops
Foreshocks
Aftershocks
Petatlan earthquake
title_short Stress drops for foreshocks and aftershocks of the 1979 Petatlán, Mexico, earthquake
title_full Stress drops for foreshocks and aftershocks of the 1979 Petatlán, Mexico, earthquake
title_fullStr Stress drops for foreshocks and aftershocks of the 1979 Petatlán, Mexico, earthquake
title_full_unstemmed Stress drops for foreshocks and aftershocks of the 1979 Petatlán, Mexico, earthquake
title_sort Stress drops for foreshocks and aftershocks of the 1979 Petatlán, Mexico, earthquake
dc.creator.none.fl_str_mv Novelo Casanova, D. A.
author Novelo Casanova, D. A.
author_facet Novelo Casanova, D. A.
author_role author
dc.subject.none.fl_str_mv Caída de esfuerzos
Premonitores
Réplicas
Temblor de Petatlan
Stress drops
Foreshocks
Aftershocks
Petatlan earthquake
topic Caída de esfuerzos
Premonitores
Réplicas
Temblor de Petatlan
Stress drops
Foreshocks
Aftershocks
Petatlan earthquake
description Stress drops for foreshocks and aftershocks (3.5 ~ ML ~ 4.0) of the 1979 Petatlan, Mexico, earthquake (Ms = 7.6) were examined with the purpose of understanding the mechanical properties of rock and the failure process of a very Young subduction zone. The static stress drop was calculated by estimating the source dimension from the width of the P-wave half-cycle and the seismic moment from a moment-magnitude relation appropriate to the region. Values of stress drop indicate an irregular distribution throughout the aftershock zone and support a two-asperity model in the source area.
publishDate 1991
dc.date.none.fl_str_mv 1991-01-01
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://revistagi.geofisica.unam.mx/index.php/RGI/article/view/1195
10.22201/igeof.00167169p.1991.30.1.948
url http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/1195
identifier_str_mv 10.22201/igeof.00167169p.1991.30.1.948
dc.language.none.fl_str_mv spa
language spa
dc.relation.none.fl_str_mv http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/1195/1131
dc.rights.none.fl_str_mv https://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidad Nacional Autónoma de México. Instituto de Geofísica
publisher.none.fl_str_mv Universidad Nacional Autónoma de México. Instituto de Geofísica
dc.source.none.fl_str_mv Geofisica Internacional; Vol. 30 No. 1 (1991): January 1, 1991; 43-54
Geofísica Internacional; Vol. 30 Núm. 1 (1991): Enero 1, 1991; 43-54
2954-436X
0016-7169
10.22201/igeof.00167169p.1991.30.1
reponame:Geofísica Internacional
instname:UNIVERSIDAD NACIONAL AUTÓNOMA DE MÉXICO
instacron:UNAM
instname_str UNIVERSIDAD NACIONAL AUTÓNOMA DE MÉXICO
instacron_str UNAM
institution UNAM
reponame_str Geofísica Internacional
collection Geofísica Internacional
repository.name.fl_str_mv
repository.mail.fl_str_mv
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