玛多7.4级地震前后青海地下流体数据响应研究  

STUDY ON THE RESPONSE OF UNDERGROUND FLUID IN QINGHAI PROVINCE TO MADUO M_(S)7.4 EARTHQUAKE

作　　者：王永刚[1] 李滔[1] WANG Yonggang;LI Tao(Xining Seismic Station,Qinghai Earthquake Agency,Xining 810008,China)

机构地区：[1]青海省地震局西宁地震台,青海西宁810008

出　　处：《高原地震》2021年第2期1-11,共11页Plateau Earthquake Research

基　　金：青海省地震局基金课题(项目编号:2020A03)资助。

摘　　要：2021年5月22日玛多7.4级地震前后,青海区域地下流体有15个测项出现震前异常、同震变化或震后响应。经过分析发现,出现异常的测项多为有水井,全部为物理量测项,且同一台站不同测项的异常同步,可以互相映证。异常响应的时间、形态、变化幅度等,跟井孔所处构造位置、震中距等均无明显关系。Before and after the Maduo M_(S)7.4 earthquake on May 22,2021,there are 15 anomalies,co-seismic changes or post-earthquake response of underground fluid measurements in Qinghai Province.After analysis and research,it is found that most of the abnormal measurement items are wells,all of them are physical measurement items,and the anomalies of different measurement items at the same station are synchronous,which can reflect each other.The time,shape and amplitude of abnormal response have no obvious relationship with the structural location and epicenter distance of the borehole.

关 键 词：玛多7.4级地震 地下流体 震前异常 同震变化 震后响应 

分 类 号：P315.723[天文地球—地震学]