Seismic Hazard Analysis by statistic and probability methods in Miamei city (Semnan province)

Miamei city is located in the east of Semnan province and It is important to seismic study because of proximity to the active Miamei Fault and recorded seismic events. Miamei, Hokmabad and Armian Faults are more importance for Seismic sources around Miamei city. In this research two methods (Gutenberg-Richter and Kijko-Selevoll methods) have been used for seismic statistical studies. Statistic studies based on Gutenberg-Richter show a 100 years return period for an earthquake with magnitude 6.5 Richter. Also based on Kijko-Selevoll show a 100 years return period for an earthquake with magnitude 5.9 Richter tat statistically has more coincide with actual events. The results of probabilistic seismic hazard analysis around the Miamei city at a radios 150 km indicate maximum horizontal acceleration of 0.7g in a 475 years return period. In this zoning, Miamei city is located in horizontal acceleration of 0.3g-0.4g which can be considered as a city with high seismic hazard class in area.