区域地震事件的纵横波差异与震源类型

Difference in P-and S-wave energy of regional seismic events for source type discrimination

简要介绍地震与爆炸的震源物理性质及地震波激发机制特征。利用地震观测波形直达纵横波震相能量释放的差异,在时间域引进标志事件震源性质的参量a。132个台站记录的22个不同震源类型事件的计算结果表明,a值具有震源性质依附效应,展现出在事件识别领域的应用前景。

Characteristics of source physics and wave radiation mechanism of the earthquakes and ex- plosions are briefly introduced. Based on the difference in observed direct P-and S-wave energy, a discriminator a indicating source characteristics is defined in time domain of seismic records. The analyzed result of the 132 station records from 22 seismic events with different source types indicates that the a values does vary with source types, showing prospective applicability in seismic source discrimination.