活断層データを地震危険度評価に生かすために

抄録

We propose hypothetical methods to predict the rupture initiation point and the directivity of rupture propagation of future earthquakes associated with active fault systems based on the morphometric unit model. The morphometric unit model including the fault branching model is a geometric criteria such as branching features of active fault traces and dip-slip distribution along the fault traces related to the dynamic rupture processes. Following high demand on detailed information for active faults, we compiled completely new active faults map of Japan with a scale of 1:25,000 and digitized to GIS database. This digital fault trace map with the distribution of measured surface displacements may provide useful information in order to predict the strong ground motions.