河北广平地震台数字电扰动异常分析  

Analysis on the anomaly of digital electric field perturbations at Guangping Seismic Sation, Hebei

作　　者：贾华[1] 乔子云[1] 贾立峰[1] 张国苓[1] 寇海川 张双凤[1] 张小涛[1] Jia Hua;Qiao Ziyun;Jia Lifeng;Zhang Guoling;Kou Haichuan;Zhang Shuangfeng;Zhang Xiaotao(Handan Seismic Station,Hebei Earthquake Agency,Hebei Province 056001,China;Hebei Earthquake Agency,Shijiazhuang 050021,China)

机构地区：[1]河北省地震局邯郸中心台

出　　处：《地震地磁观测与研究》2019年第4期95-101,共7页Seismological and Geomagnetic Observation and Research

基　　金：国家自然科学基金(项目编号：41274079);中国地震局青年震情跟踪工作任务(项目编号：2018010409)

摘　　要：自2018年1月11日,河北广平地震台数字电扰动仪Ns、EW测道每日北京时间18时至次日06时出现规律性高值变化。通过观测系统检测、测区环境调查、现场实验分析、周边台站观测对比、其他台干扰形态分析及震例总结等手段,并对各种可能的影响因素进行分析论证,综合分析认为,该变化为干扰的可能性较大,非地震前异常。The NS and EW track of digital electromagnetic disturbance at Guangping Seismic Station shows high value change in daily Beijing time from 18:00 to 06:00 the next day since January 11,2018 with regularity.Various possible influencing factors are analyzed such as observation system detection,environmental of the survey area,field experimental analysis,observation comparison of peripheral station,summary of earthquake cases in other stations and analysis of disturbance patterns.Comprehensive analysis indicates that the change is more likely interference,rather than precursory anomaly.

关 键 词：电扰动 异常分析 高值变化 地震异常 

分 类 号：P31[天文地球—固体地球物理学]