河北昌黎地震台地电阻率异常分析  

Analysis on the anomaly of resistivity at Changli Seismic Station, Hebei Province

作　　者：乔子云[1] 张国苓[1] 茅远哲 贾立峰[1] 寇海川 周剑青 佟鑫 Qiao Ziyun;Zhang Guoling;Mao Yuanzhe;Jia Lifeng;Kou Haichuan;Zhou Jianqing;Tong Xin(Hebei Earthquake Agency, Shijiazhuang 050021, China;Qinhuangdao Seismic Station, Hebei Province 066100, China)

机构地区：[1]河北省地震局,中国石家庄050021 [2]秦皇岛中心台,中国河北066100

出　　处：《地震地磁观测与研究》2019年第1期85-90,共6页Seismological and Geomagnetic Observation and Research

基　　金：中国地震局地震科技星火计划青年项目(项目编号:XH17004Y);中国地震局青年震情跟踪工作任务(项目编号:2018010409);国家自然科学基金(项目编号:41274079)

摘　　要：河北昌黎台地电阻率EW测道2017年6—8月出现快速下降变化,经检测,观测系统工作正常。通过环境调研和辅助资料对比分析,发现该变化与降雨和粉丝厂干扰有一定关系。采用褶积滤波法去掉降雨干扰,EW测道地电阻率仍为下降趋势,说明该下降变化不能完全用降雨来解释,不排除是地震前异常变化的可能。The rapid decline change of resistivity from Changli Seismic Station in EW direction is detected since 6-8, 2017. It has been found that the observation system working properly. Through environmental research and comparative analysis of auxiliary data, it was found that this change has a certain relationship with rainfall and fan factory disturbance. But the decline trend of EW channel is still exist after removing the effects of rain by convolution filtering method. This shows that the decline change could not be explained by rainfall completely. and also could not exclude the abnormal change before some earthquake.

关 键 词：地电阻率 降雨干扰 褶积滤波法 异常分析 

分 类 号：P315.722[天文地球—地震学]