The Time-dependent Seismic Microzonation Map of Near Fault Area in Taiwan

The Time-dependent Seismic Microzonation Map of Near Fault Area in Taiwan

Time-dependent probability model are considered because studies of paleoseismic records on well-studied faults in Taiwan have found them to be technically defensible characterizations of the timing of earthquakes. If the behavior of earthquake recurrence is credible evidence of recurrence behavior, then a time-dependent recurrence model for describing the probability of earthquake occurrence must be part of the uncertainty in the hazard assessment. A relative hazard factor that is used to consider the time-dependent hazard estimation is the Equivalent Poisson Ratio (EPR). It is expressed as an effective Conditional Probability ratio of the time-dependent to the time-independent hazard estimate. That is, a seismic hazard ground motion map relative the particular periods near the faults can be estimated in the principles of probabilistic seismic hazard analysis (PSHA). The conditional probability in the next subsequent time windows (Tp) corresponds to a renewal model with the coefficient of variation of the recurrence interval. The time-dependent seismic microzonation map of near for the 25 major faults area in Taiwan is developed in this study.