重复地震识别的参数选取综述

分析滤波频段、台站密度及互相关系数阈值等参数的选取与重复地震识别率的关系，对“波形相关”意义上的重复地震与物理意义上震源区的重复地震之间的关系进行定性讨论。结果表明，尽可能增加可用台站数、多使用近震资料、选取约0.2～20 Hz的滤波频段及不小于0.8的互相关系数阈值，可以较好地识别重复地震。此外，当重复地震事件MS ≥ 4.5时，两个事件的震源区至少有部分重合。

A Review on the Selection of Parameters in Identifying Repeating Earthquakes

We analyze the relationships between filter bandwidth, density of stations in the study area, threshold for correlation coefficient, and recognition rate. We also discuss the differences between “repeating events” by cross-correlation of seismic waveforms and the overlap of rupture zone semi-quantitatively. The results indicate that: more stations, local earthquake data, a 0.2-20 Hz bandpass filter and a detection threshold over 0.8 should be used. Furthermore, if MS≥4.5 for two repeating events, there is at least some overlap between their source zone.