2017 Volume 17 Issue 5 Pages 5_1-5_20
In this paper, we estimated the influence of slip velocity function on the reproducibility of observation records by the theoretical method. First, we collected source fault models based on the waveform inversion of strong motion data (hereinafter called "Inversion Model"). In addition, we constructed characterized source models based on strong ground motion prediction method by the Headquarters for Earthquake Research Promotion (hereinafter called "Recipe Model") . Next, we simulated observation records using these source fault models by the theoretical method. It was found that the calculated waves using Recipe Model considering the region shallower than seismogenic layer overestimated observation records near source region. These results were caused by difference of the slip velocity functions in the region shallower than the seismogenic layer between Inversion Model and Recipe Model. Based on the above results, we recommended the Yoffe-type slip velocity functions modified by Tinti et al. (2005) for shallower region than the seismogenic layer from Inversion Model.
