Abstract
Based on awareness that observed strong ground motions have been dramatically accumulated, we proposed “Seismic Wave Inventory” (Tanaka & Takada, 2009), which is the wave selection method from observed database. In this study, the concept of Seismic Wave Inventory is expanded for probabilistic seismic hazard analysis as well as for a design ground motion selection method corresponding to a target return period. First, we conduct seismic hazard analysis. The feature of our method is that occurrence probability is given to each ground motion based on occurrence probability of each earthquake source. This gives uncertainty of ground motion intensity level, where the theoretical distribution (e.g. Log-normal distribution) is employed in the conventional method. A seismic hazard curve represented by an arbitrary intensity measure can be calculated. Then, set of design ground motions can be obtained corresponding to a target return period, which definitely satisfies the contribution factor in each magnitude distance bin.
