涉县地震台地磁加卸载响应比异常分析  

Anomaly analysis of geomagnetic loading and unloading response ratio at Shexian Geomagnetic Station

作　　者：王彬[1] 张小涛[1] 江永建[1] 张建国[1] WANG Bin;ZHANG Xiaotao;JIANG Yongjian;ZHANG Jianguo(Handan Seismic Station,Hebei Province 056001,China)

机构地区：[1]河北省地震局邯郸中心台,中国河北056001

出　　处：《地震地磁观测与研究》2020年第4期70-77,共8页Seismological and Geomagnetic Observation and Research

基　　金：河北省地震局星火计划(项目编号:DZ20190424069)。

摘　　要：2019年1月7日涉县地震台地磁Z分量加卸载响应比出现高值变化,通过检测观测系统、调研测区环境、分析空间磁场影响、对比同台多套仪器及对比河北省内其他台站相同仪器和分析震例等,认为涉县台地磁加卸载响应比高值变化不排除是地震地球物理异常的可能。Z component geomagnetic loading and unloading response ratio at Shexian Geomagnetic Station appears high-value anomalies on Jan.7,2019.By checking the observation system and environment of the survey area,analyzing the effect of the magnetic field,comparing with observations from other instruments at the same station and same kind of instruments at other stations in Hebei,and conducting earthquake case studies,it was found that high-value anomalies of Z component geomagnetic loading and unloading response ratios at the geomagnetic stations in Hebei Province are more likely earthquake geophysical anomalies.

关 键 词：地磁Z分量 加卸载响应比 异常分析 

分 类 号：P315.78[天文地球—地震学]