利用地磁日变低点位移确立地震短临预报指标的方法

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英文篇名：THE METHOD OF DETERMINING THE INDEX OF THE SHORT-TERM AND IMMINENT EARTHQUAKE PREDICTION BY USING THE LOW-POINT DISPLACEMENT OF THE DAILY GEOMAGNETIC VARIATION 中文刊名：地震 英文刊名：EARTHQUAKE 作者：陈绍明 ; 解用明 ; 赵英萍 ; 谢美娟 ; 将邦本 ; 刘绮亮 英文作者：Chen Shaoming ; Jiang Bangben ; Xie Yongming ; Liu Qiliang ; Zhao Yingping ; Xe Meijuan(Seismological Bureau of Hebei Province ; Shjiazhuang 050021 ; China)(Beijing University ; Beijing 100871 ; China)(Institute of Geophysics ; SSB ; Beijing 100081 ; China) 中文关键词：地磁日变化 ; 地磁垂直分量 ; 短临预报 ; 预报指标 ; 前兆信息 英文关键词：Verticalcomponent of geomagnetism ; Daily variation of Geomagnetism ; Short-term and imminent prediction ; Prediction index ; Precursory information 出版日期：1997-01-26 机构：河北省地震局!中国石家庄,050021,河北省地震局!中国石家庄,050021,河北省地震局!中国石家庄,050021,河北省地震局!中国石家庄,050021,北京大学!中国北京,100871,国家地震局地球物理研究所!中国北京,100081 年：1997 期：01 出版单位：地震

摘要

利用华北地区近20a来的资料，对地磁日变低点位移与地震的关系进行了统计研究，并在此基础上建立了地震的短临预报指标。统计结果表明，低点位移分界线的分布与震中的分布有较好的一致性，两者均为网络状分布。还获得了一些可以区分震中区异常和非震中区异常的信息，并且初步确定了提取这个信息量的方法。这对于进一步缩小预报地区的范围有其实用意义
This paper statistically studied the relationship between seismicity and thelow-point displacement of the daily geomagnetic variation by using the data of the lasttwo decades in North China, based on which the index of the short- term and imminentearthquake prediction was established. The statistical result shows that the distributionof the low-point disp1acement boundary is quite coincident with the epicenter distribu-tion, both distributed in netted pattern. The further research on the feature of theIow-point displacement also obtained some information, which can discriminate theanomaly of the epicentral region from that of the non-epicentral regions. The tech-niques for extracting this information were preliminarily determined. It is practically sig-nificant to diminish the range of the prediction region.

引文

1陈绍明.日变低点位移分界线的网络分布及其与地震关系的探讨.地震,1987,(5):33～39.
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