Update of the Reservoir Triggered Seismicity of Brazil - 2008
Abstract
The first compilation of Brazilian seismicity was had in 1984, ever since, more than 40 cases were registered and compiled. This objective research is to understand the nature of the RTS that has been observed to date, particularly in Brazil. It was exposed here a synopsis of the historical cases of RIS in Brazil, a review the lithology of hypocentral areas where RTS has been observed, their filling history and reservoir characteristics. Joining to cases of Brazil RTS was presented recent case, in Irapé Reservoir. In a general way, we can observe that, at Brazil the effect of RIS is mainly of the fast type (following the initial filling of the reservoir). Another characteristic is: the RTS generally occur in boundary province, although the number of dams and hydroelectric power is larger than in the provinces. The scientific exploration of RTS is still not well understood and this work shows that we need more effort to understand RIS in Brazil. Finally it’s important observe that seismic frequency can change after the build of a dam.
- Publication:
-
AGU Fall Meeting Abstracts
- Pub Date:
- December 2009
- Bibcode:
- 2009AGUFM.S23B1742V
- Keywords:
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- 7200 SEISMOLOGY;
- 7230 SEISMOLOGY / Seismicity and tectonics