利用山西台网 sPn 震相计算近震震源深度的初步研究

摘要

利用山西数字测震台网波形记录资料，根据sPn震相，计算2010年1月24日山西河津4．8级地震、2013年2月22日山西大同4．0级地震的震源深度。测得结果与山西省地震局编目结果、中国地震局编目结果对比基本一致，认为sPn震相分析准确，所测结果较为可靠，在实际工作中可为监测预报提供更为精确的地震参数指标。%By using the waveform records of Shanxi digital seismic network ,focal depths of Hejin 4 .8 earthquake on January 24 , 2010 and Datong 4 .0 earthquake on February 22 ,2013 are calculated by sPn phase .The results are consistent with the catalogue re‐sults of Earthquake Administration and China Earthquake Administration .Therefore ,it is considered that the sPn phase analysis is accurate and the results are reliable .In practice ,it can provide more accurate seismic parameters for monitoring and prediction .