2020年1月19日新疆伽师M_(S)6.4地震地球物理观测异常分析  

ANALYSIS OF GEOPHYSICAL OBSERVATION ANOMALY WITH JIASHI M_(S)6.4 EARTHQUAKE IN XINJIANG ON NOVEMBER 19,2020

作　　者：木拉提江·阿不来提 高歌[1] Mulatijiang·Abulaiti;Gao Ge(Earthquake Agency of Xinjiang Uygur Autonomous Region,Urumqi 830011,Xinjiang,China)

机构地区：[1]新疆维吾尔自治区地震局,新疆乌鲁木齐830011

出　　处：《内陆地震》2021年第4期363-369,共7页Inland Earthquake

基　　金：新疆地震科学基金(202103);新疆地震科学基金(201915);2019年度震情跟踪定向工作任务(2019010406);2020年自治区创新环境(人才、基地)建设专项—自然科学计划(自然科学基金)(2020D01A85)。

摘　　要：为研究地震异常,对南天山西段地球物理观测资料进行分析,喀什台地磁、乌恰钻孔倾斜的资料变化与2020年1月19日新疆伽师M_(S)6.4地震有关。(1)喀什台地磁秒数据垂直强度极化法、Z分量日变幅加卸载响应比均出现超阈值的高值异常;(2)乌恰钻孔倾斜EW分量2019年5月12日~11月24日反向东倾,异常幅度达到4.54″,随后恢复正常西倾变化。Based on the analysis of geophysical observations in the western part of South Tianshan,the data changes of Kashgar geomagnetism and Wuqia borehole tilt are related to Jiashi M_(S)6.4 earthquake in Xinjiang on January 19,2020.(1)The vertical intensity polarization method of Kashgar geomagnetic second data and the loading and unloading response ratio of daily variation amplitude of Z component all have high value anomalies exceeding the threshold;(2)From May 12 to November 24,2019,the EW component of borehole tilt in Wuqia tilted reversely to the East,with an abnormal amplitude of 4.54″,and then returned to the normal West.

关 键 词：新疆伽师M_(S)6.4地震 极化法 加卸载响应比 钻孔倾斜 

分 类 号：P315.7[天文地球—地震学]