1995年1月17日大阪平野北部地震(M_<JMA> 5.4)の震源インバージョンとその波形シミュレーション

概要

論文の詳細を見る
This study presents a seismic source inversion using a genetic algorithm and seismic waveform simulation for the 1995 January 17 earthquake (M_<JMA> 5.4). The earthquake occurred below Itami city in the north of the Osaka plain. From this seismic source inversion using a genetic algorithm, the source parameters are obtained as follows: the fault style is a vertical fault, and the fault slip is mostly right-lateral strike slip. Using the inverted source parameters, we simulate the seismic motions recorded at 8 stations with the 3D finite difference method. P-wave and S-wave arrivals of the synthetic waveforms show good agreement with the observed waveforms. Later arrivals of the synthetics agree in amplitude at all stations except for one station but do not agree in waveform at several stations. This suggests needs of improvement of the source model and the subsurface structure model.
一般社団法人日本建築学会の論文
2001-03-20