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SKS波分裂方法是研究地球内部各向异性的常用方法.随着地震资料数量的急剧增加,人工拾取并计算SKS波分裂需要耗费大量的时间和精力.本研究提出通过利用STA/LTA方法识别SKS波震相,利用时频分析确定滤波范围,并利用滑动时间窗时结果的稳定性选取SKS波时间窗,进而实现了SKS波分裂分析的自动化.运用该方法分析流动地震台站观测数据,并与人工计算SKS波分裂的结果进行对比,验证了该方法的正确性和可靠性.
SKS wave splitting method is a common method to study the anisotropy inside the earth.With the rapid increase of seismic data, it takes a lot of time and effort to manually pick up and calculate SKS wave splitting.This study proposed to identify SKS by using STA / LTA method Wave seismic phase, the filtering range is determined by time-frequency analysis, and the time window of SKS wave is selected by using the stability of the sliding time window to realize the automation of SKS wave splitting analysis. The method is applied to analyze the observation data of the mobile seismic station Compared with the manual calculation of the SKS wave splitting results, the correctness and reliability of the proposed method are verified.