洛阳地震台地电场观测系统防雷改造期间数据干扰分析  

Analysis of data interference during lightning protection reconstruction of the geoelectric field observation system at Luoyang Seismic Station

作　　者：谢佳兴 侯博文 张翰博 程楠 刘庆华 赵彦旭[1] 郅红魁[1] XIE Jiaxing;HOU Bowen;ZHANG Hanbo;CHENG Nan;LIU Qinghua;ZHAO Yanxu;ZHI Hongkui(Luoyang Seismic Station,Henan Earthquake Agency,Henan Province 471000,China;Zhengzhou Seismic Station,Henan Earthquake Agency,Henan Province 450046,China)

机构地区：[1]河南省地震局洛阳地震台,河南471000 [2]河南省地震局郑州地震台,河南450046

出　　处：《地震地磁观测与研究》2020年第2期146-154,共9页Seismological and Geomagnetic Observation and Research

基　　金：中国地震局震情跟踪青年项目(项目编号:2020010412);中国地震局监测预报科研三结合课题(项目编号:3JH-202002019)。

摘　　要：2018年洛阳地震台观测技术保障系统升级改造,地电场观测系统短极距NS、NE测道数据出现大幅度阶跃变化,其中NS测道变化达-420 mV/km,NE测道变化达-290mV/km。通过走访调查地电场观测环境,巡检测试观测系统,并核实、分析观测技术保障系统,发现本次数据变化非地震地球物理异常,应为电源防雷插排漏电及机柜内接地线未明确分类所导致的干扰。During the upgrade of the observation technology support system of the Luoyang Seismic Station in 2018, the short polar-distance NS and NE observation item data of the geoelectric field observation system showed large step changes. Among them, the range of NS observation item data reaches-420 mV/km, and the range of NE observation item data reaches-290 mV/km. In the paper, through the investigation of the geoelectric field observation environment, combined with the inspection of the observation system and analysis of the observation technology support system, it is found that this data change is not an earthquake geophysical anomaly, the interference should be caused by the power leakage of lightning protection socket and the ground wire in the cabinet that cannot be clearly classified.

关 键 词：地电场观测 防雷改造 漏电干扰 

分 类 号：P315.62[天文地球—地震学]