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地震 ›› 2000, Vol. 20 ›› Issue (1): 65-70.

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首都圈及其邻近地区电磁辐射映震效果研究

关华平1, 陈智勇2, 余素荣1   

  1. 1.中国地震局分析预报中心,北京 100036;
    2.河北省廊坊市地震局,河北 廊坊 65000
  • 收稿日期:1999-02-02 修回日期:1999-05-20 出版日期:2000-01-31 发布日期:2022-09-26
  • 作者简介:关华平(1943-),男,副研究员,主要从事地震预报及地电、电磁辐射预报方法等研究
  • 基金资助:
    中国地震局“九五',科研攻关项目(95-01-05-01-04)

Study on seismic Preeursor feature of eleetromagnetic radiation in the capital cirele and its surrounding area

GUAN Hua-ping1, CHEN Zhi-yong2, YU Su-rong1   

  1. 1. Center for Analysis and Predieton,CSB,Beijing 100036,China;
    2. The Langfang seismo-logiceal Bureau of Hebei Province,Langfang 065000,China
  • Received:1999-02-02 Revised:1999-05-20 Online:2000-01-31 Published:2022-09-26

摘要: 首都圈及其附近地区多年观测的电磁辐射资料表明,地震电磁辐射异常与300km范围内5级以上地震,200km范围内4.5~4.9级地震和10km范围内4.0~4.4级地震具有比较明显的对应关系。其变化规律和映震特点是震中距愈小,地震愈大,信息持续时间愈长,异常幅度也愈大;异常面积(即异常台站数)与地震大小成正相关。统计表明,中等以上地震与异常信息对应率约76%。

关键词: 首都圈, 电磁辐射, 映震效果

Abstract: The electromagnetic radiation data observed for many years in the Capltal circle and its srounding area demonstrates that electromagnetic radiation anomalies are rerelative signfieantly with the earthquakes M≥5 with in a rang of 300km,the earthquake M=4.5~4.9 within 200km and the earthquakes M=4.0~4.4 within 100km The seismic preeursor feature is that the larger the earthquakes,the shorter the epicentral distanee;the longer the duration,and the greater the amplitude of the anomalies,as well as the anomalous area,i.e.the number of the stations with anomalies,is positive proportional to the earthquake magnitudes.The statistieal result shows that the correspondence ratio of moderately stror, earthquakes or stronger eventsreaehes 76%.

Key words: Capital circle, Electromagnetic radiation, Seismiec preeursor feature

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