基于数据跟踪分析河北电磁台网环境干扰因素  

Analysis of environmental interference in Hebei electromagnetic network based on data tracking

作　　者：王莉森[1] 张云昌[2] 殷金平 牛露[1] Wang Lisen;Zhang Yunchang;Yin Jinping;Niu Lu(Hebei Earthquake Agency, Shijiazhuang 050021, China;National Earthquake Response Support Service, Beijing Municipality 100036, China;Ganzhou Earthquake Agency, Jiangxi Province 341000, China)

机构地区：[1]河北省地震局,中国石家庄050021 [2]中国地震应急搜救中心,中国北京100036 [3]赣州市地震局,中国江西341000

出　　处：《地震地磁观测与研究》2017年第3期145-152,共8页Seismological and Geomagnetic Observation and Research

基　　金：中国地震台网中心协作项目--河北省地震前兆台网事件(2008-2014)分析提取与图集报告产出;河北省地震局"三结合"项目--基于数据跟踪分析产品库浅析河北电磁观测环境干扰因素(项目编号:201701)

摘　　要：以河北电磁台网2008—2016年地震前兆数据跟踪分析产品信息为数据源,归纳该台网主要环境干扰因素,主要干扰表现为降雨、高压直流输电、农田灌溉3种类型,约占干扰因素约88.47%。分析各类干扰因素成因、动态曲线变化特征,提取并总结电磁台网环境干扰典型实例及变化特征,为地震前兆异常变化地准确判断提供有效实例支持与技术参考;根据干扰成因和观测经验,通过同场地增加气象三要素观测可快速识别降雨干扰,通过地埋观测外线路、地磁场深井观测方式可避免或减小干扰,为排除环境干扰,探索抑制干扰的新方法服务。In this paper,taking the precursory data tracking analysis of product information from seismic network of Hebei Province in2008to2016as the data source,the major environmental disturbances in Hebei electromagnetic network are analyzed and summarized.In analysis,all kinds of interference factors,causes and dynamic variation curves are studied,the typical examples of electromagnetic network environment interference are extracted,the examples of effective and technical support for the accurate judgment of precursory variation are provided.At the same time,according to the interference causes,the measures for reducing the interference or avoiding interference are discussed,in order to obtain accurate geophysical field observation data to do further research.In the course of the study,the database table structure of the data trace analysis information is also studied,and some improvements for the better service are put forward.

关 键 词：数据跟踪分析 产品信息 环境干扰 电磁 异常 

分 类 号：P315.78[天文地球—地震学]