dor_id: 4132445

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/899/853

100.1.#.a: Monterroso, David A.; Kulhánek, Ota

524.#.#.a: Monterroso, David A., et al. (2003). Spatial variations of b-values in the subduction zone of Central America. Geofísica Internacional; Vol. 42 Núm. 4: Octubre 1, 2003; 575-587. Recuperado de https://repositorio.unam.mx/contenidos/4132445

245.1.0.a: Spatial variations of b-values in the subduction zone of Central America

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

561.1.#.a: Instituto de Geofísica, UNAM

264.#.0.c: 2003

264.#.1.c: 2003-10-01

653.#.#.a: Valor de b; zona de subducción; América Central; cadena volcánica; esfuerzo; b-value; subduction zone; Central America; volcanic chain; stress

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/899

001.#.#.#: 063.oai:revistagi.geofisica.unam.mx:article/899

041.#.7.h: spa

520.3.#.a: Frequency-magnitude distribution along the Mid-American Trench (MAT) has been studied by means of 2345 earthquakes during the period 1964-1994. We used the regional MIDAS catalogue with a magnitude of completeness of 4.2. To resolve the b- value as a function of depth (one dimensional approach), we applied vertically sliding windows containing a constant number of events. To obtain more details in the b distribution, we projected catalogue hypocenters in three selected regions (approximately Guatemala and El Salvador, Nicaragua, Costa Rica), onto planes perpendicular to the trench. The b-values were calculated in sliding cylindrical volumes (two-dimensional approach) containing a constant number of earthquakes and centered at nodes of a 5 km x 5 km grid. The b-value varies significantly along a large part of MAT. High b-values were identified in the upper part of the slab at depths of 80-110 km beneath Guatemala-El Salvador and at depths 130-170 km beneath Nicaragua. Anomalous (high) b- values in the lower part of the slab were located at depths of 50-90 km and 50-160 km beneath Guatemala-El Salvador and Nicaragua, respectively. Anomalies observed at the upper part of the slab may be related to dehydration and successive increase in pore pressure in the down-going lithosphere, which may generate volcanism above the anomalies in the upper part of the slab. Anomalies on the lower surface of the Wadati-Benioff zone are likely to be associated with high thermal gradients between the slab and mantle.doi: https://doi.org/10.22201/igeof.00167169p.2003.42.4.312

773.1.#.t: Geofísica Internacional; Vol. 42 Núm. 4: Octubre 1, 2003; 575-587

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: 575-587

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

doi: https://doi.org/10.22201/igeof.00167169p.2003.42.4.312

handle: 117ad8e9263673eb

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

856.#.0.q: application/pdf

file_creation_date: 2022-07-18 21:00:09.0

file_modification_date: 2022-07-18 21:00:09.0

file_creator: David A. Monterroso and Ota Kulhánek

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245.1.0.b: Spatial variations of b-values in the subduction zone of Central America

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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