Memoirs of the Graduate Schools of Engineering and System Informatics Kobe University, No. 3, pp. 1-6, 2011

Hazard-Consistent Magnitude and Distance in Iran

Hamid SAFFARI1, Yasuko KUWATA1, Shiro TAKADA2

1Graduate School of Engineering, Department of Civil Engineering, Kobe University
2Faculty of Engineering, Department of Civil Engineering, University of Tehran

(Received December 24, 2010; Accepted March 11, 2012; Online published March 16, 2012)

Keywords: Seismic hazard analysis, Probabilistic approach, Deaggregation

This study deals with the deaggregation of probabilistic seismic hazard of Iran. To this, the relative contributions of earthquake parameters to the total hazard are computed by probabilistic seismic hazard analysis (PSHA) deaggregation. Afterwards, the representative values of earthquake magnitude and distance are obtained for all meshes of Iran and they are plotted as hazard-consistent magnitude and distance, respectively. In the deaggregation analysis for major cities with over one million populations, the values of the strong-motion parameter are recalculated using representative values of magnitude and distance of high contributed seismic sources for PGA, PGV and in each period. New seismic parameters will be matching closely with the distance and magnitude values as obtained by the PSHA approach.

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