Seismic hazard analysis using simulated ground-motion time histories: The case of the Sefidrud dam, Iran

The results of this method with different declustering schemes are reported for two level of seismic hazard analysis (i.e. return periods of 475 and 2475 years). Best estimate seismic hazard maps of PGA and PGV values obtained from the logic tree method is presented. By inclusion of simulation results for the Rudbar fault in the probabilistic seismic hazard analysis (PSHA), maximum PGA and PGV for 475 years return period obtained around 340 cm/s/s and 25 cm/s, respectively. For classic PSHA without including simulation the maximum PGA and PGV for 475 years return period obtained around 450 cm/s/s and 32 cm/s, respectively. With the simulation-based PSHA for a 2475 years return period a maximum PGA of 650 cm/s/s and PGV of 50 cm/s have been estimated. Classic PSHA (without simulation) for a 2475 years return period has resulted a maximum PGA of 850 cm/s/s and PGV of 65 cm/s.