Distribution of (mb - Ms) of moderate earthquakes along the Mexican seismic zone

We study the spatial distribution of mb-Ms for 55 earthquakes from 1978 to 1994 with focal depth from 0 to 80 km, mb from 4.5 to 5.5, which occurred along the Middle America trench, between 95° to 107° W. The mb-Ms values have a bimodal distribution, with peaks at values of 0.3 and 0.8 and minimum a...

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Detalles Bibliográficos
Autor: Zobin , Vyacheslav M.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:1999
País:México
Institución:UNIVERSIDAD NACIONAL AUTÓNOMA DE MÉXICO
Repositorio:Geofísica Internacional
Idioma:español
OAI Identifier:oai:revistagi.geofisica.unam.mx:article/629
Acceso en línea:http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/629
Access Level:acceso abierto
Palabra clave:Temblor
magnitud
México
subducción
Earthquake
magnitude
Mexico
subduction
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network_name_str México
repository_id_str
spelling Distribution of (mb - Ms) of moderate earthquakes along the Mexican seismic zoneDistribution of (mb - Ms) of moderate earthquakes along the Mexican seismic zoneZobin , Vyacheslav M.TemblormagnitudMéxicosubducciónEarthquakemagnitudeMexicosubductionWe study the spatial distribution of mb-Ms for 55 earthquakes from 1978 to 1994 with focal depth from 0 to 80 km, mb from 4.5 to 5.5, which occurred along the Middle America trench, between 95° to 107° W. The mb-Ms values have a bimodal distribution, with peaks at values of 0.3 and 0.8 and minimum at mb-Ms=0.6. Events of the first group, mb-Ms <0.6, were distributed along the trench over the whole region, and events of the second group, mb-Ms ³ 0.6, were found mainly in the central part of the region, within the Guerrero block. These data show that the Oaxaca block consists of a relatively homogeneous lithosphere, where low- frequency events dominate, while the Guerrero block is more complex radiating both low- and high-frequency events.Se estudia la distribución espacial de los valores mb-Ms para 55 sismos en el periodo de 1978 a 1994, con profundidades focales de 0 a 80 km, mb de 4.5 a 5.5, ocurridos a lo largo de la Trinchera Mesoamericana entre 95° y 107°W. Los valores mb-Ms tienen una distribución bimodal, con picos en 0.3 y 0.8 y mínimo en mb-Ms=0.6. Los eventos del primer grupo, con mb-Ms<0.6, se distribuyeron a lo largo de la trinchera en toda la región, comprendida por los bloques Michoacán, Guerrero y Oaxaca; la mayoría de los eventos del segundo grupo, con mb-Ms³0.6, se encontraron en la parte central de la región en el bloque de Guerrero. Estos datos muestran que la litosfera del bloque de Oaxaca está relativamente homogénea y genera los eventos de baja frecuencia, pero la litosfera del bloque de Guerrero está más compleja y produce los eventos de alta y baja frecuencia.Universidad Nacional Autónoma de México. Instituto de Geofísica1999-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://revistagi.geofisica.unam.mx/index.php/RGI/article/view/62910.22201/igeof.00167169p.1999.38.1.899Geofisica Internacional; Vol. 38 No. 1 (1999): January 1, 1999; 43-48Geofísica Internacional; Vol. 38 Núm. 1 (1999): Enero 1, 1999; 43-482954-436X0016-716910.22201/igeof.00167169p.1999.38.1reponame:Geofísica Internacionalinstname:UNIVERSIDAD NACIONAL AUTÓNOMA DE MÉXICOinstacron:UNAMspahttp://revistagi.geofisica.unam.mx/index.php/RGI/article/view/629/635https://creativecommons.org/licenses/by-nc-sa/4.0/info:eu-repo/semantics/openAccessoai:revistagi.geofisica.unam.mx:article/6292024-08-16T17:31:56Z
dc.title.none.fl_str_mv Distribution of (mb - Ms) of moderate earthquakes along the Mexican seismic zone
Distribution of (mb - Ms) of moderate earthquakes along the Mexican seismic zone
title Distribution of (mb - Ms) of moderate earthquakes along the Mexican seismic zone
spellingShingle Distribution of (mb - Ms) of moderate earthquakes along the Mexican seismic zone
Zobin , Vyacheslav M.
Temblor
magnitud
México
subducción
Earthquake
magnitude
Mexico
subduction
title_short Distribution of (mb - Ms) of moderate earthquakes along the Mexican seismic zone
title_full Distribution of (mb - Ms) of moderate earthquakes along the Mexican seismic zone
title_fullStr Distribution of (mb - Ms) of moderate earthquakes along the Mexican seismic zone
title_full_unstemmed Distribution of (mb - Ms) of moderate earthquakes along the Mexican seismic zone
title_sort Distribution of (mb - Ms) of moderate earthquakes along the Mexican seismic zone
dc.creator.none.fl_str_mv Zobin , Vyacheslav M.
author Zobin , Vyacheslav M.
author_facet Zobin , Vyacheslav M.
author_role author
dc.subject.none.fl_str_mv Temblor
magnitud
México
subducción
Earthquake
magnitude
Mexico
subduction
topic Temblor
magnitud
México
subducción
Earthquake
magnitude
Mexico
subduction
description We study the spatial distribution of mb-Ms for 55 earthquakes from 1978 to 1994 with focal depth from 0 to 80 km, mb from 4.5 to 5.5, which occurred along the Middle America trench, between 95° to 107° W. The mb-Ms values have a bimodal distribution, with peaks at values of 0.3 and 0.8 and minimum at mb-Ms=0.6. Events of the first group, mb-Ms <0.6, were distributed along the trench over the whole region, and events of the second group, mb-Ms ³ 0.6, were found mainly in the central part of the region, within the Guerrero block. These data show that the Oaxaca block consists of a relatively homogeneous lithosphere, where low- frequency events dominate, while the Guerrero block is more complex radiating both low- and high-frequency events.
publishDate 1999
dc.date.none.fl_str_mv 1999-01-01
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/629
10.22201/igeof.00167169p.1999.38.1.899
url http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/629
identifier_str_mv 10.22201/igeof.00167169p.1999.38.1.899
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/629/635
dc.rights.none.fl_str_mv https://creativecommons.org/licenses/by-nc-sa/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/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. 38 No. 1 (1999): January 1, 1999; 43-48
Geofísica Internacional; Vol. 38 Núm. 1 (1999): Enero 1, 1999; 43-48
2954-436X
0016-7169
10.22201/igeof.00167169p.1999.38.1
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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score 15,81155

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