dor_id: 4132119

506.#.#.a: Público

590.#.#.d: Los artículos enviados a la revista "Geofísica Internacional", se juzgan por medio de un proceso de revisión por pares

510.0.#.a: Consejo Nacional de Ciencia y Tecnología (CONACyT); Scientific Electronic Library Online (SciELO); SCOPUS, Dialnet, Directory of Open Access Journals (DOAJ); Geobase

561.#.#.u: https://www.geofisica.unam.mx/

650.#.4.x: Físico Matemáticas y Ciencias de la Tierra

336.#.#.b: article

336.#.#.3: Artículo de Investigación

336.#.#.a: Artículo

351.#.#.6: http://revistagi.geofisica.unam.mx/index.php/RGI

351.#.#.b: Geofísica Internacional

351.#.#.a: Artículos

harvesting_group: RevistasUNAM

270.1.#.p: Revistas UNAM. Dirección General de Publicaciones y Fomento Editorial, UNAM en revistas@unam.mx

590.#.#.c: Open Journal Systems (OJS)

270.#.#.d: MX

270.1.#.d: México

590.#.#.b: Concentrador

883.#.#.u: https://revistas.unam.mx/catalogo/

883.#.#.a: Revistas UNAM

590.#.#.a: Coordinación de Difusión Cultural

883.#.#.1: https://www.publicaciones.unam.mx/

883.#.#.q: Dirección General de Publicaciones y Fomento Editorial

850.#.#.a: Universidad Nacional Autónoma de México

856.4.0.u: http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/302/298

100.1.#.a: UNAM Seismology group; Pérez-Campos, Xyoli; Shri Krishna, Singh Singh; Iglesias Mendoza, Arturo; Alcántara, L; Ordaz, M; Legrand, Denis; Aguilar, L. A.; Almora, D.; Ambriz, M.; Ayala, M.; Cárdenas, C.; Castro, G.; Cruz, J. l; Delgado, R.; Estrada, J.; Franco-Sánchez, S.I.; Macías, M.A.; Molina, I.; Navarro, F.; Pérez, C.; Pérez, J.; Quezada, A.; Quintanar Robles, Luis; Rodríguez, L.E.; Ruiz, A.L.; Sandoval, H. E.; Torres, M.; Valdés-González, C.; Vázquez, R; Velasco, JM.; Velázquez, J.; Velázquez, M.

524.#.#.a: UNAM Seismology group, et al. (2010). Intraslab Mexican earthquakes of. Geofísica Internacional; Vol. 49 Núm. 3: Julio 1, 2010; 153-163. Recuperado de https://repositorio.unam.mx/contenidos/4132119

245.1.0.a: Intraslab Mexican earthquakes of

502.#.#.c: Universidad Nacional Autónoma de México

561.1.#.a: Instituto de Geofísica, UNAM

264.#.0.c: 2010

264.#.1.c: 2010-07-01

653.#.#.a: Sismos intraplaca; geometría de la placa; energía radiada; movimiento del terreno; Intraplate earthquakes; slab geometry; radiated energy; ground motion

506.1.#.a: La titularidad de los derechos patrimoniales de esta obra pertenece a las instituciones editoras. Su uso se rige por una licencia Creative Commons BY-NC-SA 4.0 Internacional, https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode.es, para un uso diferente consultar al responsable jurídico del repositorio por medio del correo electrónico revistagi@igeofisica.unam.mx

884.#.#.k: http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/302

001.#.#.#: 063.oai:revistagi.geofisica.unam.mx:article/302

041.#.7.h: spa

520.3.#.a: Two types of intraslab earthquakes in the subducted Cocos plate occur below Guerrero, Mexico, and adjacent areas: (A) steeply-dipping thrust earthquakes, and (B) normal-faulting earthquakes. Type A events are located ~10-35 km from the coast at a depth of ~35 km and reveal down-dip compression in the slab, most probably a consequence of unbending of the slab. Type B earthquakes are only slightly deeper than type A events when they occur near the coast, but if they occur farther inland where the slab becomes horizontal, they reach a depth of 40-50 km. They reveal down-dip extension in the subducted slab. Analysis of earthquakes of 27 April 2009 and 22 May 2009 reveals that they were intraslab events in the subducted Cocos plate of type A and B, respectively. The source spectra retrieved from local and regional data yield Brune stress drop, Δσ, of ~49 and 34 MPa, respectively, somewhat greater than the median Δσ of 30 MPa previously reported for intraslab Mexican earthquakes. Our estimates of the radiated energy, ER, are 3.55x1013 J and 2.29x1013 J, which gives ER/M0 of 5.63x10-5 and 6.54x10-5, and apparent stress, σa, of 3.9 MPa and 4.6 MPa, respectively (corresponding to M0 reported in Global CMT catalog), reasonable values for intraslab earthquakes. Peak ground accelerations (PGA) as a function of distance are in fairly good agreement with previously-derived attenuation relations for Mexican intraslab earthquakes. Ground motions in the Valley of Mexico from intraslab earthquakes are enriched at high frequency as compared to those from interplate events, especially in the hill zone. This reflects both a more energetic nature of the intraslab sources and, relatively, closer location of many of these earthquakes. The results obtained in this study give us some confidence in our knowledge of the nature of intraslab sources and our ability to estimate ground motions from future events.doi: https://doi.org/10.22201/igeof.00167169p.2010.49.3.111

773.1.#.t: Geofísica Internacional; Vol. 49 Núm. 3: Julio 1, 2010; 153-163

773.1.#.o: http://revistagi.geofisica.unam.mx/index.php/RGI

022.#.#.a: ISSN-L: 2954-436X; ISSN impreso: 0016-7169

310.#.#.a: Trimestral

300.#.#.a: Páginas: 153-163

264.#.1.b: Instituto de Geofísica, UNAM

doi: https://doi.org/10.22201/igeof.00167169p.2010.49.3.111

handle: 00afca39c2656bb6

harvesting_date: 2023-06-20 16:00:00.0

856.#.0.q: application/pdf

file_creation_date: 2010-06-17 15:54:50.0

file_modification_date: 2022-06-06 17:17:55.0

file_creator: Xyoli Pérez-Campos

file_name: ab94936b4df8d8c8c145a12ac1b23f2f40e6178b127e9caccfbb3ec46d2d3120.pdf

file_pages_number: 11

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file_size: 651224

245.1.0.b: Intraslab Mexican earthquakes of 27 April 2009 (Mw5.8) and 22 May 2009 (Mw5.6): a source and ground motion study

last_modified: 2023-06-20 16:00:00

license_url: https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode.es

license_type: by-nc-sa

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Artículo

Intraslab Mexican earthquakes of

UNAM Seismology group; Pérez-Campos, Xyoli; Shri Krishna, Singh Singh; Iglesias Mendoza, Arturo; Alcántara, L; Ordaz, M; Legrand, Denis; Aguilar, L. A.; Almora, D.; Ambriz, M.; Ayala, M.; Cárdenas, C.; Castro, G.; Cruz, J. l; Delgado, R.; Estrada, J.; Franco-Sánchez, S.I.; Macías, M.A.; Molina, I.; Navarro, F.; Pérez, C.; Pérez, J.; Quezada, A.; Quintanar Robles, Luis; Rodríguez, L.E.; Ruiz, A.L.; Sandoval, H. E.; Torres, M.; Valdés-González, C.; Vázquez, R; Velasco, JM.; Velázquez, J.; Velázquez, M.

Instituto de Geofísica, UNAM, publicado en Geofísica Internacional, y cosechado de Revistas UNAM

Licencia de uso

Procedencia del contenido

Entidad o dependencia
Instituto de Geofísica, UNAM
Revista
Geofísica Internacional
Repositorio
Revistas UNAM
Contacto
Revistas UNAM. Dirección General de Publicaciones y Fomento Editorial, UNAM en revistas@unam.mx

Cita

UNAM Seismology group, et al. (2010). Intraslab Mexican earthquakes of. Geofísica Internacional; Vol. 49 Núm. 3: Julio 1, 2010; 153-163. Recuperado de https://repositorio.unam.mx/contenidos/4132119

Descripción del recurso

Autor(es)
UNAM Seismology group; Pérez-Campos, Xyoli; Shri Krishna, Singh Singh; Iglesias Mendoza, Arturo; Alcántara, L; Ordaz, M; Legrand, Denis; Aguilar, L. A.; Almora, D.; Ambriz, M.; Ayala, M.; Cárdenas, C.; Castro, G.; Cruz, J. l; Delgado, R.; Estrada, J.; Franco-Sánchez, S.I.; Macías, M.A.; Molina, I.; Navarro, F.; Pérez, C.; Pérez, J.; Quezada, A.; Quintanar Robles, Luis; Rodríguez, L.E.; Ruiz, A.L.; Sandoval, H. E.; Torres, M.; Valdés-González, C.; Vázquez, R; Velasco, JM.; Velázquez, J.; Velázquez, M.
Tipo
Artículo de Investigación
Área del conocimiento
Físico Matemáticas y Ciencias de la Tierra
Título
Intraslab Mexican earthquakes of
Fecha
2010-07-01
Resumen
Two types of intraslab earthquakes in the subducted Cocos plate occur below Guerrero, Mexico, and adjacent areas: (A) steeply-dipping thrust earthquakes, and (B) normal-faulting earthquakes. Type A events are located ~10-35 km from the coast at a depth of ~35 km and reveal down-dip compression in the slab, most probably a consequence of unbending of the slab. Type B earthquakes are only slightly deeper than type A events when they occur near the coast, but if they occur farther inland where the slab becomes horizontal, they reach a depth of 40-50 km. They reveal down-dip extension in the subducted slab. Analysis of earthquakes of 27 April 2009 and 22 May 2009 reveals that they were intraslab events in the subducted Cocos plate of type A and B, respectively. The source spectra retrieved from local and regional data yield Brune stress drop, Δσ, of ~49 and 34 MPa, respectively, somewhat greater than the median Δσ of 30 MPa previously reported for intraslab Mexican earthquakes. Our estimates of the radiated energy, ER, are 3.55x1013 J and 2.29x1013 J, which gives ER/M0 of 5.63x10-5 and 6.54x10-5, and apparent stress, σa, of 3.9 MPa and 4.6 MPa, respectively (corresponding to M0 reported in Global CMT catalog), reasonable values for intraslab earthquakes. Peak ground accelerations (PGA) as a function of distance are in fairly good agreement with previously-derived attenuation relations for Mexican intraslab earthquakes. Ground motions in the Valley of Mexico from intraslab earthquakes are enriched at high frequency as compared to those from interplate events, especially in the hill zone. This reflects both a more energetic nature of the intraslab sources and, relatively, closer location of many of these earthquakes. The results obtained in this study give us some confidence in our knowledge of the nature of intraslab sources and our ability to estimate ground motions from future events.doi: https://doi.org/10.22201/igeof.00167169p.2010.49.3.111
Tema
Sismos intraplaca; geometría de la placa; energía radiada; movimiento del terreno; Intraplate earthquakes; slab geometry; radiated energy; ground motion
Idioma
spa
ISSN
ISSN-L: 2954-436X; ISSN impreso: 0016-7169

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