CASE STUDIES IN DETERMINISTIC SEISMIC HAZARD ASSESSMENT

Abstract

An important component of hazard mitigation is to predict damage prior to hazardous event. In present study deterministic seismic hazard assessment of Andaman and Nicobar region and Surma-Basin region (part of North-East India) is carried out, which are one of the most seismically active regions of India. The study areas were mainly divided in to 7 and 11 seismogenic source zones based on seismicity and tectonic setting for Andaman and Nicobar and Surma-Basin region respectively. For ground motion estimation at study area, for each seismogenic zone different attenuation relationship is used as per tectonic setting of that seismogenic zone. Final results are presented in the form of peak ground acceleration and 5%-damped PSA for 0.2 sec and 1 sec. Calculated results are compared with past work for the studied area and are found to be in good agreement.