青海省地电场观测典型干扰识别与分析  

IDENTIFICATION AND ANALYSIS OF TYPICAL INTERFERENCE FACTORS OF GEOELECTRIC FIELD IN QINGHAI PROVINCE

作　　者：文勇[1] 张敏[1] 张程 孟鑫[1] 杨浩 WEN Yong;ZHANG Min;ZHANG Cheng;MENG Xin;YANG Hao(Delingha Seismic Station,Qinghai Earthquake Agency,Delingha 817099)

机构地区：[1]青海省地震局德令哈地震台,青海德令哈817099

出　　处：《高原地震》2020年第3期56-63,共8页Plateau Earthquake Research

基　　金：中国地震局监测、预报、科研三结合课题(项目编号:3JH-201902022)资助。

摘　　要：采用2015~2018年青海省5个地电场观测台站观测资料,对一些影响地电场数据变化的常规干扰因素进行了识别与分析。认为常见的干扰有地电阻率同场地观测干扰、雷电干扰、地磁暴、大风、降雨(融雪)及农田灌溉等。对以上干扰实例进行现场考察、查阅数据等对数据的日变形态及特征进行分析,干扰的主要表现形势为台阶、阶跃、高频脉冲及不规则大幅度突跳等。Based on the observation data of 5 geoelectric field observation stations in Qinghai Province from 2015 to 2018.Some common disturbance factors which affect the variation on earth electric field data are identified and analyzed.Common disturbances include ground resistivity and field observation disturbance,lightning disturbance,geomagnetic storm,gale,rainfall(snowmelt)and farmland irrigation.In this paper,the daily variation forms and characteristics of the data are analyzed through field investigation and data reference.The main manifestations of the interference are steps,steps,high-frequency pulses and large irregular jumps.This paper analyzes the manifestation of the above interference sources,and expounds how to correctly identify the interference.

关 键 词：青海省 地电场 干扰因素 观测数据 

分 类 号：P315.72[天文地球—地震学]