A Physical Model for the Evaluation of the Slip Rates of Crustal Faults in Japan

Abstract eng:
Constructing regional seismic hazard models often requires estimating the long term slip rates of active crustal faults and estimating the recurrence intervals of the related characteristic earthquakes. This is a difficult task. Paleoseismic studies and kinematic models based on GPS data play a critical role in providing this information. However, for many faults, paleoseismic and detailed GPS data are either not complete or not available. In such situations and when there is reasonable understanding of the causative tectonic environment, physical models can be used to simulate regional stress/strain accumulation and release across faults. These simulations can be used to evaluate the possible long term slip rates of faults under different tectonic settings. It is the objective of this study to construct such a physical model for Japan in order to evaluate the long term slip rates of the regional crustal faults.

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