Seismotectonics and Seismic Hazard Assessment of the Sari quadrangle in Iran

摘要

This research is a part of the Iranian Seismic Hazard Assessment Program. The Sari Province is located in the north of Iran with several active faults. Seismic Risk map of this area were made by using the Seismic data of the past and seismo-tectonic studies. Seismic parameters such as β and λ and also return period of Magnitude earthquakes estimated. This research improved the integration of the geological input in seismic hazard assessment. We applied several attenuation models and deterministic and probabilistic approaches throughout the Sari quadrangle. The maps of the area include the maximum acceleration (g) on the base rock. The return Periods of those maps are 200, 475, 2475, 5000 and 10000 years respectively. Finally, the seismic hazard zonation map has been presented for Sari quadrangle and classified to four zones with low,moderate, high and very high seismic zones. The Design Response Spectra with several return periods presented for these zones.