Theoretical and Observational Study of Waves Radiated from Faults in Heterogeneous Media

本研究旨在研究弹性常数的非均质性对震源辐射的影响。理论研究和数据分析都将使用加利福尼亚州帕克菲尔德附近圣安德烈亚斯断层沿线记录的钻孔地震图数据来研究非均质断层带理论与均匀断层带理论的意义。这项研究的结果将与强地面运动的预测有关，也将用于从远震和近场数据估计震源特性。因此，这是对国家防震减灾计划的重要贡献。

This research is to study the effects of the heterogeneity of elastic constants on the radiation from seismic sources. Both theoretical studies and data analysis will be applied to the significance of heterogeneous versus homogeneous fault zone theory using data from borehole seismograms recorded along the San Andreas fault near Parkfield, California. The results of this research will bear on the prediction of strong ground motion, and also for the estimation of source properties from both teleseismic and near-field data. It is therefore an important contribution to the National Earthquake Hazard Reduction Program.