2020年1月16日库车Ms5.6地震定点形变中短期异常分析  

ANALYSIS ON FIXED-POINT DEFORMATION MEDIUM AND SHORT-TERM ANOMALIES OF XINJIANG KUQA M_(s)5.6 EARTHQUAKE ON JANUARY 16,2020

作　　者：郭春生[1] 颜龙[1] 斯琴[1] 高歌[1] GUO Chun-sheng;YAN Long;SI Qin;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3期262-267,共6页Inland Earthquake

基　　金：新疆地震局科学基金(201906).

摘　　要：据中国地震台网中心测定,2020年1月16日16时32分,新疆维吾尔自治区库车县(41.21°N,83.60°E)发生M_(s)5.6地震,震源深度16 km。为了增强对地震异常的识别能力,提高该地区的震情跟踪水平,利用形态法梳理震中250 km范围内19项定点形变测项,共梳理出钻孔倾斜、水管倾斜仪、垂直摆、断层仪和洞体应变仪5项中短期异常,异常类型主要表现为年变畸变类异常,其中倾斜类的3项异常均出现在EW向与等震线长轴方向一致。Ms5.6 earthquake occurred in Kuqa(41.21°N,83.60°E),Xinjiang Uygur Autonomous Region at 16:32 on January 16,2020 with a focal depth of 16 km.In order to enhance the ability to identify earthquake anomalies and improve the earthquake situation tracking level in this area,this paper used morphological method to sort out 19 fixed-point deformation measurement items within 250 km of the epicenter,and sorted out 5 medium and short-term anomalies,including borehole tilt,water tube tiltmeter,vertical pendulum,fault instrument and tunnel strain instrument.The anomaly types are mainly annual variation distortion anomalies,among them,the three anomalies of tilt type appeared in EW direction,which is consistent with the long axis of isoseismal line.

关 键 词：库车Ms5.6地震 中短期异常 年变畸变 形态法 

分 类 号：P315.7[天文地球—地震学]