عنوان مقاله [English]
Tehran, the capital of Iran, needs a very precise investigation of seismicity and seismic hazard, due to a population exceeding 10 million and the existence of major political, economical, social and cultural centers. The present research has been undertaken in the southern part of Tehran. A set of historical and instrumentally recorded seismic data have been employed, covering a timeline from 4 centuries BC up to now, and the seismic sources were modeled in a radius of 200 km around Tehran. In order to assess the seismicity parameters, Kijko's method has been used. The spectral attenuation relationships of Ambraseys, Simpson \& Bommer (1996), were used. A probabilistic seismic hazard evaluation was performed on a grid of 16$\times$ 9 points in the southern part of Tehran, using SEISRISK III. The corresponding results have been depicted by horizontal spectral acceleration maps and horizontal uniform hazard mean, and mean plus one, standard deviation spectra, with 2\% and 10\% PE, over 50 years for different municipality zones of southern Tehran.