新疆新源、和静交界M_S6.6地震前部分地震学异常及序列特征
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摘要
对2012年6月30日新疆新源、和静交界MS6.6地震基本参数、震源机制解、构造背景、地震序列特征及震前地震活动图像异常特征等进行了分析。结果显示,本次地震序列为主-余型,发震构造为北天山地震带喀什河断裂、那拉提断裂及阿吾拉勒山南缘断裂的交汇区,震源断错性质为走滑型。地震活动表明,震前震源区周围地区存在明显的空区和条带等中、短期异常,但是没有短临异常出现。
By analyzing seismic parameters,focal mechanism solution,tectonic setting,sequence characteristics and seismicity anomalies of Xinyuan,Hejing earthquake with MS6.6 on June 30th,2012,the results show the earthquake belongs to main shock-after shock type.The causative structure located at intersection of Kashi river fault,Nalati fault and southern region of Awulale fault in Northern Tianshan seismic belt and the earthquake was strick-slip.There are obvious medium and short term anomalies such as seismic gap,seismic belt near focal region but without short-impending anomaly before the earthquake.
By analyzing seismic parameters,focal mechanism solution,tectonic setting,sequence characteristics and seismicity anomalies of Xinyuan,Hejing earthquake with MS6.6 on June 30th,2012,the results show the earthquake belongs to main shock-after shock type.The causative structure located at intersection of Kashi river fault,Nalati fault and southern region of Awulale fault in Northern Tianshan seismic belt and the earthquake was strick-slip.There are obvious medium and short term anomalies such as seismic gap,seismic belt near focal region but without short-impending anomaly before the earthquake.
引文
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