河北涉县地震台数字电扰动异常分析  

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

作　　者：徐强 张建国[1] 张双凤[1] 张国苓[2] 江永建[1] 张小涛[1] 赵长红[1] 王秋根 XU Qiang;ZHANG Jianguo;ZHANG Shuangfeng;ZHANG Guol ing;JIANG Yongjian;ZHANG Xiaotao;ZHAO changhong;WANG Qiugen(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,中国河北056001 [2]河北省地震局,中国石家庄050021

出　　处：《地震地磁观测与研究》2020年第1期56-63,共8页Seismological and Geomagnetic Observation and Research

基　　金：国家自然科学基金(项目编号:41274079)。

摘　　要：2019年2月5日以来,河北涉县地震台CNEM08-Ⅰ型数字电扰动仪NS、EW测道观测数据与正常日变形态不同,出现了整体下移且幅度增大的异常变化,该异常集中出现在每日的5—10时、15—23时2个时间段,具有明显的规律性.通过测区环境调查、观测系统检测、空间环境分析、与周边台站观测对比、现场实验及以往震例分析等研判认为,此次异常是由台站电锅炉漏电引起的,非地震地球物理异常.Since February 5,2019,the two observation data which is observed by NS and EW direction testing paths of the CNEM08-I digital electric perturbation in Shexian,Hebei Province are different from the normal diurnal deformation patterns.There has been an abnormal change that data curve has an overall downward movement and the change amplitude are increasing gradually.The abnormal change has regularity,it occurs in two time periods from 05:00 to 10:00 and 15:00 to 23:00 everyday.Through the analysis of the environmental investigation,the detection of the observation system,the analysis of the space environment,the observation and comparison of the surrounding stations,the field experiment,the analysis of the earthquake cases and so on,it is considered that the abnormality is caused by the leakage of the electric boiler of the station rather than earthquake geophysics anomalies.

关 键 词：电扰动 异常分析 河北涉县地震台 

分 类 号：P315.78[天文地球—地震学]