Abstract
It has become a standard procedure recently that some of source parameters, such as area and stress drop of asperities, of a scenario earthquake are evaluated based on short period level of acceleration source spectrum. The short period level, however, is usually not taken into account in probabilistic seismic hazard analyses. The present study introduces short period level of each earthquake into probabilistic seismic hazard analyses utilizing attenuation relationships that include the short period level as one of variables.
