dor_id: 4132911

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336.#.#.b: article

336.#.#.3: Artículo de Investigación

336.#.#.a: Artículo

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351.#.#.b: Geofísica Internacional

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100.1.#.a: De Souza, Jorge Luis

524.#.#.a: De Souza, Jorge Luis (1996). Shear wave velocities beneath the eastern part of Brazil. Geofísica Internacional; Vol. 35 Núm. 3: Julio 1, 1996; 301-314. Recuperado de https://repositorio.unam.mx/contenidos/4132911

245.1.0.a: Shear wave velocities beneath the eastern part of Brazil

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

561.1.#.a: Instituto de Geofísica, UNAM

264.#.0.c: 1996

264.#.1.c: 1996-07-01

653.#.#.a: Dispersión de ondas de Rayleigh; velocidad de ondas S; Brasil Oriental; Rayleigh wave dispersion; shear wave velocity; Eastern Brazil

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

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001.#.#.#: 063.oai:revistagi.geofisica.unam.mx:article/567

041.#.7.h: spa

520.3.#.a: Rayleigh wave dispersion curves from seventeen earthquakes which occurred in the North Atlantic Ocean area are used to obtam the shear wave velocity structure of the eastern part of the Brazilian territory. The dispersion curves were divided into three groups of paths (A, B, and C) according to geographical position of the epicenters, and a dispersion curve representative of each path was computed. The inversion results of these dispersion curves show that the crustal structure is composed basically of three layers with S-wave velocities varying from 3.30-3.57 km/s, 3.52-3.66 km/s and 3.86-3.92 km/s, respectively. The sub-Moho layer is chll{acterized by shear wave velocities varying from 4.41 to 4.43 km/s. Path C exhibits a sub-Moho thickness thinner than the other two paths. Below the sub-Moho layer, shear wave velocities of 4.27 km/s and 4.22 km/s are found in both paths A and C, but it has been clearly resolved only in path C where the S-wave ,velocity was assumed to be 4.22 km/s. A comparative analysis between the models obtained in the present study and those representative of other shield areas reveals a strong similarity between the models of eastern Brazil and those of eastern South America (Hwang and Mitchell, 1987) and Antarctica (Dewart and Toksoz, 1965; Singh, 1994). This is probably related to the past existence of Gondwanaland.doi: https://doi.org/10.22201/igeof.00167169p.1996.35.3.464

773.1.#.t: Geofísica Internacional; Vol. 35 Núm. 3: Julio 1, 1996; 301-314

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

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

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doi: https://doi.org/10.22201/igeof.00167169p.1996.35.3.464

handle: 6d407132f1b2992f

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

856.#.0.q: application/pdf

file_creation_date: 2008-02-14 20:01:45.0

file_modification_date: 2022-07-08 19:25:19.0

file_creator: Jorge Luis de Souza

file_name: bf039a80b535414238bcfe08e209a606796a9755b7d377df8128f1bfa6b627ca.pdf

file_pages_number: 14

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245.1.0.b: Shear wave velocities beneath the eastern part of Brazil

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

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Artículo

Shear wave velocities beneath the eastern part of Brazil

De Souza, Jorge Luis

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
Repositorio
Contacto
Revistas UNAM. Dirección General de Publicaciones y Fomento Editorial, UNAM en revistas@unam.mx

Cita

De Souza, Jorge Luis (1996). Shear wave velocities beneath the eastern part of Brazil. Geofísica Internacional; Vol. 35 Núm. 3: Julio 1, 1996; 301-314. Recuperado de https://repositorio.unam.mx/contenidos/4132911

Descripción del recurso

Autor(es)
De Souza, Jorge Luis
Tipo
Artículo de Investigación
Área del conocimiento
Físico Matemáticas y Ciencias de la Tierra
Título
Shear wave velocities beneath the eastern part of Brazil
Fecha
1996-07-01
Resumen
Rayleigh wave dispersion curves from seventeen earthquakes which occurred in the North Atlantic Ocean area are used to obtam the shear wave velocity structure of the eastern part of the Brazilian territory. The dispersion curves were divided into three groups of paths (A, B, and C) according to geographical position of the epicenters, and a dispersion curve representative of each path was computed. The inversion results of these dispersion curves show that the crustal structure is composed basically of three layers with S-wave velocities varying from 3.30-3.57 km/s, 3.52-3.66 km/s and 3.86-3.92 km/s, respectively. The sub-Moho layer is chll{acterized by shear wave velocities varying from 4.41 to 4.43 km/s. Path C exhibits a sub-Moho thickness thinner than the other two paths. Below the sub-Moho layer, shear wave velocities of 4.27 km/s and 4.22 km/s are found in both paths A and C, but it has been clearly resolved only in path C where the S-wave ,velocity was assumed to be 4.22 km/s. A comparative analysis between the models obtained in the present study and those representative of other shield areas reveals a strong similarity between the models of eastern Brazil and those of eastern South America (Hwang and Mitchell, 1987) and Antarctica (Dewart and Toksoz, 1965; Singh, 1994). This is probably related to the past existence of Gondwanaland.doi: https://doi.org/10.22201/igeof.00167169p.1996.35.3.464
Tema
Dispersión de ondas de Rayleigh; velocidad de ondas S; Brasil Oriental; Rayleigh wave dispersion; shear wave velocity; Eastern Brazil
Idioma
spa
ISSN
ISSN-L: 2954-436X; ISSN impreso: 0016-7169

Enlaces