内蒙古地电场观测中的干扰识别与分析  

Identification and Analysis of Geoelectric Field Observation Interference in Inner Mongolia

作　　者：赵星[1] 查斯[1] 格根[1] 熊峰[1] 王树忠 ZHAO Xing;CHA Si;GE Gen;XIONG Feng;WANG Shu-zhong(The Inner Mongolia Autonomous Region Seismological Bureau,Inner Mongolia Hohhot 010010,China)

机构地区：[1]内蒙古自治区地震局

出　　处：《防灾减灾学报》2019年第2期27-31,共5页Journal of Disaster Prevention And Reduction

基　　金：中国地震局三结合课题(CEA-JC/3JH-160508)

摘　　要：主要分析了内蒙古3个地电场台站在观测运行中常出现的干扰类型,以及干扰的变化形态和规律,针对干扰的特点和规律进行机理研究。结果表明,地电场观测中的电阻率同源干扰、电极极化干扰、雷电干扰、降雨干扰、居民生活用电干扰和全球范围内的磁暴干扰都有较明显的变化形态。地电场对测量区域内环境要求较高,对测区内交直流电接地及磁场变化都有着敏感响应。在利用地电场数据进行地震短临异常预报工作时,必须详细分析异常数据,对各种干扰因素进行排除。In this paper,we introduce and analyze the interference which often occur in the observation and operation of three geoelectric field stations in Inner Mongolia,as well as the variation patterns and rules of interference. The characteristics and rules of interference are analyzed. The results show that the resistivity homologous interference,electrode polarization interference,lightning interference,rainfall interference,residential electrical interference and magnetic storm interference in the earth electric field observation have obvious variation patterns. The geoelectric field is sensitive to the change of AC / DC grounding and magnetic field. When using the geoelectric field data to judge the earthquake short-term and impending anomalies,it is necessary to analyze and judge the abnormal data in detail and eliminate all kinds of disturbance factors.

关 键 词：地电场 干扰类型 变化形态 

分 类 号：P315.72[天文地球—地震学]