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
dor_id: 4132911
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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
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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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300.#.#.a: Páginas: 301-314
264.#.1.b: Instituto de Geofísica, UNAM
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
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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
license_url: https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode.es
license_type: by-nc-sa
De Souza, Jorge Luis
Instituto de Geofísica, UNAM, publicado en Geofísica Internacional, y cosechado de Revistas UNAM
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