Depth of the Moho in northern Baja California using (Pg-Pn)travel times
Mean Moho depths along the axis of the Peninsular Ranges in northern Baja California are obtained from refracted waves of events in northern Baja California recorded on an array of 9 broadband seismic stations across the northern Baja California Peninsula at about latitude 31°N. We used 35 events lo...
| Autores: | , , |
|---|---|
| Formato: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2001 |
| País: | México |
| Recursos: | UNIVERSIDAD NACIONAL AUTÓNOMA DE MÉXICO |
| Repositorio: | Geofísica Internacional |
| Idioma: | español |
| OAI Identifier: | oai:revistagi.geofisica.unam.mx:article/714 |
| Acesso em linha: | http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/714 |
| Access Level: | acceso abierto |
| Palavra-chave: | Profundidad del Moho sismicidad Macizo Peninsular Moho depth seismicity Peninsular ranges |
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Depth of the Moho in northern Baja California using (Pg-Pn)travel timesDepth of the Moho in northern Baja California using (Pg-Pn)travel timesReyes, Luis M.Rebollar, Cecilio J.Castro, RaúlProfundidad del MohosismicidadMacizo PeninsularMoho depthseismicityPeninsular rangesMean Moho depths along the axis of the Peninsular Ranges in northern Baja California are obtained from refracted waves of events in northern Baja California recorded on an array of 9 broadband seismic stations across the northern Baja California Peninsula at about latitude 31°N. We used 35 events located with RESNOM (Red Sísmica del Noroeste de México) and RANM (Red de Acelerógrafos del Noroeste de México) local data. Focal depths range from 3 to 15 km and magnitudes from 2.1 to 3.9. A 1-D velocity model (Nava and Brune, 1982) was used to calculate theoretical travel times of Pg and Pn for different Moho depths. The differences between observed and theoretical (Pg-Pn) travel times was minimized in an iterative process in order to find the most likely Moho depth along the axis of the Peninsular Ranges between latitudes 31.3° and 31.7°N. It was found that the average Moho depth is approximately 42±3 km in the western Peninsular Ranges, diminishing to 31±3 toward the west along the Pacific Ocean and to 20±3 km toward the Gulf of California.Calculamos las profundidades del Moho a lo largo del eje del Macizo Peninsular de Baja California, usando ondas refractadas de eventos localizados en el norte de Baja California y registrados en un arreglo de 9 estaciones de banda ancha a lo largo de la latitud 31°N. Utilizamos 35 eventos localizados con RESNOM (Red Sísmica del Noroeste de México) y RANM (Red de Acelerógrafos del Noroeste de México) en el norte de Baja California. Las profundidades focales de estos eventos varían entre 3 y 15 km y las magnitudes entre 2.1 a 3.9. El modelo de velocidades en una dimensión, 1-D (Nava and Brune, 1982), fue usado para calcular los tiempos de viaje teóricos de Pg y Pn para diferentes profundidades. Las diferencias entre tiempos de viaje teóricos y observados (Pg- Pn) fueron minimizadas en un proceso iterativo a fin de encontrar la profundidad más probable del Moho a lo largo del eje del Macizo Peninsular entre las latitudes 31.3° y 31.7°N. Encontramos que la profundidad promedio del Moho es aproxi- madamente 42±3 km en el oeste del Macizo Peninsular, disminuyendo a 31±3 hacia el oeste a lo largo de la costa del Pacífico y 20±3 km hacia el Golfo de Baja California.Universidad Nacional Autónoma de México. Instituto de Geofísica2001-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://revistagi.geofisica.unam.mx/index.php/RGI/article/view/71410.22201/igeof.00167169p.2001.40.1.417Geofisica Internacional; Vol. 40 No. 1 (2001): January 1, 2001; 21-29Geofísica Internacional; Vol. 40 Núm. 1 (2001): Enero 1, 2001; 21-292954-436X0016-716910.22201/igeof.00167169p.2001.40.1reponame:Geofísica Internacionalinstname:UNIVERSIDAD NACIONAL AUTÓNOMA DE MÉXICOinstacron:UNAMspahttp://revistagi.geofisica.unam.mx/index.php/RGI/article/view/714/705https://creativecommons.org/licenses/by-nc-sa/4.0/info:eu-repo/semantics/openAccessoai:revistagi.geofisica.unam.mx:article/7142024-08-16T17:31:57Z |
| dc.title.none.fl_str_mv |
Depth of the Moho in northern Baja California using (Pg-Pn)travel times Depth of the Moho in northern Baja California using (Pg-Pn)travel times |
| title |
Depth of the Moho in northern Baja California using (Pg-Pn)travel times |
| spellingShingle |
Depth of the Moho in northern Baja California using (Pg-Pn)travel times Reyes, Luis M. Profundidad del Moho sismicidad Macizo Peninsular Moho depth seismicity Peninsular ranges |
| title_short |
Depth of the Moho in northern Baja California using (Pg-Pn)travel times |
| title_full |
Depth of the Moho in northern Baja California using (Pg-Pn)travel times |
| title_fullStr |
Depth of the Moho in northern Baja California using (Pg-Pn)travel times |
| title_full_unstemmed |
Depth of the Moho in northern Baja California using (Pg-Pn)travel times |
| title_sort |
Depth of the Moho in northern Baja California using (Pg-Pn)travel times |
| dc.creator.none.fl_str_mv |
Reyes, Luis M. Rebollar, Cecilio J. Castro, Raúl |
| author |
Reyes, Luis M. |
| author_facet |
Reyes, Luis M. Rebollar, Cecilio J. Castro, Raúl |
| author_role |
author |
| author2 |
Rebollar, Cecilio J. Castro, Raúl |
| author2_role |
author author |
| dc.subject.none.fl_str_mv |
Profundidad del Moho sismicidad Macizo Peninsular Moho depth seismicity Peninsular ranges |
| topic |
Profundidad del Moho sismicidad Macizo Peninsular Moho depth seismicity Peninsular ranges |
| description |
Mean Moho depths along the axis of the Peninsular Ranges in northern Baja California are obtained from refracted waves of events in northern Baja California recorded on an array of 9 broadband seismic stations across the northern Baja California Peninsula at about latitude 31°N. We used 35 events located with RESNOM (Red Sísmica del Noroeste de México) and RANM (Red de Acelerógrafos del Noroeste de México) local data. Focal depths range from 3 to 15 km and magnitudes from 2.1 to 3.9. A 1-D velocity model (Nava and Brune, 1982) was used to calculate theoretical travel times of Pg and Pn for different Moho depths. The differences between observed and theoretical (Pg-Pn) travel times was minimized in an iterative process in order to find the most likely Moho depth along the axis of the Peninsular Ranges between latitudes 31.3° and 31.7°N. It was found that the average Moho depth is approximately 42±3 km in the western Peninsular Ranges, diminishing to 31±3 toward the west along the Pacific Ocean and to 20±3 km toward the Gulf of California. |
| publishDate |
2001 |
| dc.date.none.fl_str_mv |
2001-01-01 |
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info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
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article |
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publishedVersion |
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http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/714 10.22201/igeof.00167169p.2001.40.1.417 |
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http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/714 |
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10.22201/igeof.00167169p.2001.40.1.417 |
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spa |
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spa |
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http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/714/705 |
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https://creativecommons.org/licenses/by-nc-sa/4.0/ info:eu-repo/semantics/openAccess |
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https://creativecommons.org/licenses/by-nc-sa/4.0/ |
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openAccess |
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application/pdf |
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Universidad Nacional Autónoma de México. Instituto de Geofísica |
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Universidad Nacional Autónoma de México. Instituto de Geofísica |
| dc.source.none.fl_str_mv |
Geofisica Internacional; Vol. 40 No. 1 (2001): January 1, 2001; 21-29 Geofísica Internacional; Vol. 40 Núm. 1 (2001): Enero 1, 2001; 21-29 2954-436X 0016-7169 10.22201/igeof.00167169p.2001.40.1 reponame:Geofísica Internacional instname:UNIVERSIDAD NACIONAL AUTÓNOMA DE MÉXICO instacron:UNAM |
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UNIVERSIDAD NACIONAL AUTÓNOMA DE MÉXICO |
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UNAM |
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Geofísica Internacional |
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