【摘要】 利用喀什国家数字地震台记录的巴楚—伽师 6 .8级地震序列资料 ,通过恢复震源位移谱 ,跟踪分析了序列中 3级以上地震的应力降 ,同时与 1997年强震群结果进行对比 ,讨论了本次地震的应力释放情况。分析结果表明 :本次 6 .8级地震序列与 1997年强震群序列相比 ,地震的应力释放为高应力释放 ,地震发展成为强震群型的可能性较小。还结合 S波偏振分析方法尝试判断了震区几次 5级以上地震震源机制的相对变化以及目前的应力状态。更多还原

【Abstract】 Using the digital seismic data recorded at Kashi station, the source spectra of M-S≥3.0 events in the Bachu-Jiashi M-S6.8 Earthquake series were recovered and their stress drops were calculated. Compared with the 1997 Jiashi strong earthquake swarm, Bachu-Jiashi M-S6.8 earthquake series had higher stress drop, and there is little probability that it will develop to be a strong earthquake swarm.Combined with the changing of S-wave polarization angles, the relative change of focal mechanisms of M-S≥5 events as well as the current stress features were primarily discussed.更多还原