フィリピン・マニラ首都圏における強震動シミュレーション

概要

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Metro Manila is located in one of the high seismicity areas of the Philippines. It is needed prediction of strong ground motion for seismic disaster mitigation. Recently, the underground subsurface structure in this area is gradually cleared. Using such data, we constructed the 3D underground model for seismic simulations. Then, we estimate strong ground motion using FD method for some assumed earthquakes which have simple rupture source models. The results of simulations show large velocity over 100cm/s in the low-velocity area around the Manila city caused by directivity and site effect for the case of rupture start point from northern edge Western Valley Fault. We also simulate ground motion using rupture pattern of the 1995 Hyogo-ken Nanbu Earthquake.
一般社団法人日本建築学会の論文
2003-03-20