利用青海省遥测地震台网的观测记录,对比分析震相特征,提取出了两次地震记录的sPn震相,并分别推导出单、双层地壳模型下的震源深度公式,计算了两次地震事件的震源深度。为验证计算结果的可靠性,利用滑动窗互相关技术进行对比,两者计算出的震源深度相差1.0 km。但分析相关系数图后,认为由于地震震级较小,滑动窗法在识别sPn震相时存在误差,误差修正后得出的结果与人工识别计算的结果一致。 Based on the observation records of telemetered seismic network in Qinghai Province, the seismic facies features were compared and analyzed, and the sPn seismic facies of two seismograms were extracted. The focal depth formulas of single and double crustal models were deduced respectively. The depth of the event’s focal point. In order to verify the reliability of the calculated results, the sliding window cross-correlation technique is used for comparison, and the depths of the hypocenters calculated by the two methods differ by 1.0 km. However, after analyzing the correlation coefficient diagram, it is considered that the sliding window method has errors in identifying the sPn seismic phase due to the small magnitude of the earthquake, and the result after the error correction is consistent with the result of the artificial identification calculation.