Evaluation of Horizontal Seismic Hazard of Naghan, Iran
This paper presents probabilistic horizontal seismic hazard assessment of Karaj, Iran. It displays the probabilistic estimate of Peak Ground Horizontal Acceleration (PGHA) for return periods of 475 and 2475 years. The output of the probabilistic seismic hazard analysis is based on peak ground acceleration (PGA), which is the most common criterion in designing of buildings. A catalogue of seismic events that includes both historical and instrumental events was developed which covers the period from 4th century BC to 2005. The seismic sources that affect the hazard in Karaj were identified within the radius of 200 km and the recurrence relationships of these sources were generated by Kijko and Sellevoll [2000]. Finally two maps have been prepared to indicate the earthquake hazard of Karaj in