大武地电场观测干扰源判定分析  

DETERMINATION AND ANALYSIS ON INTERFERENCE SOURCES OBSERVED IN DAWU GEOELECTRIC FIELD

作　　者：李焱林 杜利峰[1] 钟辉宗 席旭忠 王涛 LI Yanlin;DU Lifeng;ZHONG Huizong;XI Xuzhong;WANG Tao(Qinghai Earthquake Agency,Xining 810005,China)

机构地区：[1]青海省地震局,青海西宁810005

出　　处：《高原地震》2023年第4期9-14,共6页Plateau Earthquake Research

基　　金：青海省地震科学基金(项目编号:2022B03)资助。

摘　　要：地电观测过程中常会遇到漏电干扰,这种干扰严重的影响了地电观测质量和地震监测效能。针对大武台地电场数据从2023年3月份开始出现的多次阶跃干扰进行分析,并对干扰源位置进行现场核实排查,使用“VAN”法识别干扰源并确定方位,在此基础上讨论其干扰变化特征,分析干扰产生过程。本次通过分析大武地电场干扰情况发现:理论计算干扰源方位与实际排查的位置基本一致,并对漏电干扰位置进行了整改措施,提升了大武台地电观测数据质量。In view of the multiple step interference in the electric field data of Dawu Terrace from March 2023,the location of the interference source was verified and checked on site,and the"VAN"method was used to identify the interference source and determine the direction,its change characteristics were discussed,and the interference generation process was analyzed.Through the investigation,it is found that the orientation of the theoretical calculation interference source is basically consistent with the actual investigation location,and rectification measures are carried out to improve the quality of geoelectric observation data.

关 键 词：地电场 VAN法 干扰源判断 

分 类 号：P319.3[天文地球—固体地球物理学]