张北Ms6.2级地震前出现的地磁日变低点位移异常
THE ANOMALIES OF GEOMAGNETIC LOW POINT DISPLACEMENT IN DAILY CHANGE BEFORE ZHANGBEI MS6.2 EARTHQUAKE
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摘要: 1998年1月10日张北发生Ms6.2级地震,地震前5d~24 d,在全国范围内出现4次地磁日变低点位移异常现象。本文对地磁日变低点位移现象的物理基础进行了初步探讨,对地磁日变低点位移异常预报地震的方法作了简要介绍,对地磁日变低点位移异常与张北地震的关系进行了分析,认为张北地震前出现的地磁日变低点位移异常是该次地震的前兆反映。Abstract: 5 to 24 days before zhangbei Ms6.2 earthquake (January 10,1998),the geomagnetic low point displacement in daily change (GLPDDC)showed 4 times abnormal in China.In this paper we preliminarily discussed the physical basis of GLPDDC,and briefly introduced the prediction method with GLPDDC anomalies.Through the analysis of the relation between GLPDDC anomalies and the Zhangbei earthquake,we believed that the GLPDDC anomalies before Zhangbei quake were the precursors of the quake.
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Key words:
- daily change of geomagnetism /
- earthquake prediction /
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[1] 1 丁鉴海,黄雪香, 周胜奎,等.地磁垂直分量日变"低点位移"预报地震方法实用化研究.地震预报方法实用化研究文集.地磁地电专辑,国家地震局科技监测司编.学术书刊出版社, 1990.
2 陈绍明,谢美娟.地磁垂直分量日变低点位移预报方法研究.地震预报方法实用化研究文集,地磁地电专辑,国家地震局科技监测司编.学术书刊出版社, 1990. -

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