玛多7.4级地震前青海省地震拟合优度异常特征分析  

ANALYSIS ON ABNORMAL CHARACTERISTICS OF GOODNESS OF FIT IN QINGHAI PROVINCE BEFORE MADUO Ms7.4 EARTHQUAKE

作　　者：李滔[1] 孙丽[1] 丁宁霞[1] LI Tao;SUN Li;DING Ningxia(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4期18-26,共9页Plateau Earthquake Research

摘　　要：通过对2021年5月22日玛多7.4级地震前,青海省内部分区域的地震拟合优度进行计算,显示自2018年6、7月起,青海东部、南部区域的地震拟合优度出现低值持续异常,但不同区域的异常进程存在差异。经过分析认为出现异常的区域均与南北地震带有较为密切构造关系。The seismic goodness of fit in some areas of Qinghai Province before the Ms7.4 Maduo earthquake on 22 nd may, 2021 are calculated in this paper.The results show that from June to July 2018 before the Ms7.4 Maduo earthquake occurred, the seismic goodness of fit in eastern and southern regions of Qinghai displays as continuously low-value persistent anomalies.However, there are differences in abnormal processes of different regions.After further analysis, it is believed that the abnormal areas are closely related to the north-south seismic belt.

关 键 词：玛多7.4级地震 G-R关系 地震拟合优度 地震异常 

分 类 号：P315.08[天文地球—地震学]