SEISMOLOGY AT IAG-USP. IAG: Inst. Astronomy, Geophysics & Atmospheric Sciences USP: University of São Paulo. Main Research Areas. Brazilian seismicity:. Crustal and upper mantle structure. Natural and dam-induced Seismic risk - Crustal stresses. deep seismic refraction
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SEISMOLOGY AT IAG-USP
IAG: Inst. Astronomy, Geophysics & Atmospheric Sciences
USP: University of São Paulo
Main Research Areas
Crustal and upper mantle structure
Cooperation with Carnegie Institute, USGS-Menlo Park
Northwestern University, Montpellier (France),
Univ. S. Carolina, Barcelona, Potsdam
Rio Grande do Norte
Rio Claro, UNESP
São Paulo, USP
Risco Sísmico no Sudeste
acel. 0,1g -> return period 50.000 years
- Support from Petrobrás/Eletronuclear
Crustal Seismic Refraction
Crustal section in Tocantins foldbelt between Amazon and
Sao Francisco cratons.
(Berrocal et al., 2004. Tectonophysics)
temporary BB stations since 1992
5 Guralps (100s)
10 RT 72A
a few 130
Swiss Stations (2002-2004)
Tomografia (Feng et al.,2006)
Upper Mantle P and S Tomography,
Central and SE Brazil.
Van der Hilst & Berrocal,
Assumpção & VanDecar,
Upper Mantle Surface Wave Tomography
- cooperation with Suzan Van der Lee (Northwestern Univ.)
Vs, 100km depth
Phys. Earth Planet. Int. 2004; JGR 2006, submitted
Crustal structure with Receiver Functions
espessura crustal (km)
On going projects in cooperation with Natal,
Brasilia, Rio Claro, NWU, Univ. South Carolina,
high frequency (~5Hz) receiver functions in sedimentary basins
Inversão da Função do Receptor
Zevallos et al.(submitted 2005)
2) Crustal and upper mantle structure.
(with Natal, NWU, S. Carolina Univ, Barcelona)
Pool of 40 BB + 400 texans,
to be funded by Petrobrás and used by Brazilian universities.
1) Northern Paraná Basin :
Basement topography and basin evolution.
(with S. Carolina Univ.)