| 2019年11月河北肥乡大地电场干扰的识别及排除 |
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| 引用本文： | 段吉超,贾华,张小涛,张国苓,孙晴,谭青,滕传奇.2019年11月河北肥乡大地电场干扰的识别及排除[J].地震地磁观测与研究,2022,43(3):45-51. |
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| 作者姓名： | 段吉超 贾华 张小涛 张国苓 孙晴 谭青 滕传奇 |
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| 作者单位： | 1. 中国河北 056001 邯郸地震监测中心站;2. 中国石家庄 050021 河北省地震局;3. 中国云南 654600 巧家县防震减灾地震局 |
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| 基金项目： | 河北省地震局监测、预测、科研三结合课题(项目编号:DZ20190419024) |
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| 摘 要： | 2019年11月肥乡大地电场观测数据出现异常变化，利用逐步逼近法和排除法，对观测系统及场地环境进行巡检，通过对比主、备用观测仪器同时段数据，查找本台站历史干扰数据并对比其他台站相似数据干扰特征，排除地球物理异常，判定此次数据异常变化由农田灌溉机井漏电所致。
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| 关 键 词： | 大地电场 异常变化 机井漏电 |
Identification and elimination of geoelectric field interference in Feixiang,Hebei Province in Nov.,2019 |
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| DUAN Jichao,JIA Hua,ZHANG Xiaotao,ZHANG Guoling,SUN Qing,TAN Qing,TENG Chuanqi.Identification and elimination of geoelectric field interference in Feixiang,Hebei Province in Nov.,2019[J].Seismological and Geomagnetic Observation and Research,2022,43(3):45-51. |
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| Authors: | DUAN Jichao JIA Hua ZHANG Xiaotao ZHANG Guoling SUN Qing TAN Qing TENG Chuanqi |
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| Institution: | 1. Handan Earthquake Monitoring Center Station, Hebei Province 056001, China;2. Hebei Earthquake Agency, Shijiazhuang 050021, China;3. Qiaojia County Bureau of Earthquake Prevention and Disaster Reduction, Yunnan Province 654600, China |
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| Abstract: | There were abnormal changes in the observation data of geoelectric field at Feixiang Seismic Station in November 2019.This paper uses the principles of "step-by-step approach" and "elimination method" to inspect the observation system and site environment,and eliminate the geophysical anomaly by comparing the data of the main and standby observation instruments in the same period,finding the historical interference of this station,and comparing the similar interference characteristics of other stations.It is determined that the failure is caused by electric leakage of farmland irrigation wells. |
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| Keywords: | geoelectric field abnormal change electrical leakage of irrigation well |
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