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Focal mechanisms and Crustal Stress in Brazil

Grant number: 11/20165-9
Support type:Scholarships in Brazil - Doctorate
Effective date (Start): March 01, 2012
Effective date (End): January 29, 2016
Field of knowledge:Physical Sciences and Mathematics - Geosciences - Geophysics
Principal researcher:Marcelo Sousa de Assumpção
Grantee:Fabio Luiz Dias
Home Institution: Instituto de Astronomia, Geofísica e Ciências Atmosféricas (IAG). Universidade de São Paulo (USP). São Paulo , SP, Brazil
Associated scholarship(s):14/26015-7 - Focal mechanism in Brazil with waveform modelling, BE.EP.DR


The knowledge of crustal stress field state is important to understand the movement and deformation of lithosphere plates. In Brazil, the stress field is poorly known due mainly the low seismicity active in the country. In this study we intend to determinate focal mechanism of several events using different techniques: P and S wave polarities, polarities ratios (pP/P, SH/P), modeling of telesseimic P wave, surface waves and full seismogram. The focal mechanisms determinations allow a better knowledge of the intraplate stress state in Brazil and will help to explain the Brazilian seismicity.

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
DIAS, FABIO L.; ASSUMPCAO, MARCELO; FACINCANI, EDNA M.; FRANCA, GEORGE S.; ASSINE, MARIO L.; PARANHOS FILHO, ANTONIO C.; GAMARRA, ROBERTO M. The 2009 earthquake, magnitude m(b) 4.8, in the Pantanal Wetlands, west-central Brazil. Anais da Academia Brasileira de Ciências, v. 88, n. 3, p. 1253-1264, SEP 2016. Web of Science Citations: 6.
FÁBIO L. DIAS; MARCELO ASSUMPÇÃO; EDNA M. FACINCANI; GEORGE S. FRANÇA; MARIO L. ASSINE; ANTÔNIO C. PARANHOS FILHO; ROBERTO M. GAMARRA. The 2009 earthquake, magnitude mb 4.8, in the Pantanal Wetlands, west-central Brazil. Anais da Academia Brasileira de Ciências, v. 88, n. 3, p. -, Set. 2016.

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