2017年9月16日新疆库车M_S5.7地震前兆异常分析  

PRECURSOR ANOMALIES ANALYZE OF KUCHE M_S5.7 EATHQUAKE IN XINJIANG

作　　者：李娜[1] 向阳[1,2] 朱成英 许秋龙[1] LI Na;XIANG Yang;ZHU Chen-yin;XU Qiu-long(Earthquake Agency of Xinjiang Uygur Autonomous Region,Urumqi 830011,Xinjiang,China;Institute of Crustal Dynamics,China Earthquake Administration,Beijing 100085,China)

机构地区：[1]新疆维吾尔自治区地震局,新疆乌鲁木齐830011 [2]中国地震局地壳应力研究所,北京100085

出　　处：《内陆地震》2019年第1期41-52,共12页Inland Earthquake

基　　金：地震科技星火计划项目(XH19052Y);中国地震局三结合项目(440307)

摘　　要：利用形态分析法,对2017年09月16日库车M_S5.7地震前震中400 km范围内形变和流体数字化观测资料进行梳理分析,提取震前异常,总结异常特征。结果表明,库车地震发生前,共有7项形变和流体的资料出现中短期及短临异常;钻孔应变异常特征表现为压缩―拉张变化、压缩速率变快、周期性台阶变化;流体异常特征表现为水位阶升和气体高值变化。Through carding and analyzing the deformation and underground fluid digital observation data by morphological analysis in the range from the epicenter of 400 km before Kuche MS5.7 earthquake on September.16,2017.We extracted the precursory anomaly information and summarized the characteristic of the anomalies.The results showed that before the Kuche earthquake occurred,there were 7 short-term precursory anomalies of deformation and fluid data;the anomaly characteristics of deformation data were compression-tensile changes,rapid compression rates,periodic step changes.The anomaly characteristics of the fluid were water level rise and the gas value changes.

关 键 词：库车MS5.7地震 地震前兆 异常特征 

分 类 号：P315.7[天文地球—地震学]