Abstract. PGA and SA distribution for Patna district is presented considering both classical and zoneless approach through logic tree frame work to capture the epistemic uncertainty. Seismicity parameters are calculated by considering completed and mixed earthquake data. Maximum magnitude was calculated using three methods namely incremental method, Kijko method and regional rupture characteristics approach. Best suitable GMPE was selected by carrying out efficacy test using log likelihood. Uniform hazard response spectra have been compared with Indian standard BIS 1893. PGA varies from 0.38 g to 0.30 g from southern to northern periphery considering 2 % probability of exceedence in 50 years.
Abstract. Peak ground acceleration
(PGA) and study area (SA) distribution for the Patna district are presented
considering both the classical and zoneless approaches through a logic tree framework to capture the epistemic uncertainty. Seismicity parameters are
calculated by considering completed and mixed earthquake data. Maximum
magnitude is calculated using three methods, namely the incremental method, Kijko
method, and regional rupture characteristics approach. The best suitable ground motion prediction
equations (GMPEs)
are selected by carrying out an “efficacy test” using log likelihood. Uniform
hazard response spectra have been compared with Indian standard BIS 1893.
PGA varies from 0.38 to 0.30 g from the southern to northern periphery
considering 2 % probability of exceedance in 50 years.
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