华北地区地震异常前兆信息场演化特征及其与地震关系的研究  

Study on the Evolutional Characteristics of Earthquake Anomalous Precursory Information Field and Its Relation with Seismicity in North China

作　　者：平建军[1] 罗兰格[1] 曹肃朝[1] 

机构地区：[1]河北省地震局,中国石家庄050021

出　　处：《中国地震》2000年第3期223-232,共10页Earthquake Research in China

基　　金：中国地震局"九五"地震科技攻关项目!(9504010202)

摘　　要：在对地震异常前兆信息量先前研究的基础上 ,进一步给出了描述各种地震异常前兆信息量的普适性综合数学表达式。从大量震例资料入手 ,再次研究了地震异常延续有效性的问题 ,进而建立了地震异常持续有效时间与延续有效时间的数学关系式。收集整理了 1980～ 1997年华北地区水化、形变、地磁、应力、水位、地电等 371个观测项目、上百万个前兆观测数据 ,对每一观测项目逐一计算了它们的地震异常前兆信息量。研究了华北地区近 2 0年的地震异常前兆信息场的演化特征及其与地震的关系 ,建立了华北地区MS≥ 5地震的中短期综合预报指标体系 ,经R值评分检验 。On the basis of prevoius study of earthquake anomlous precursory information magnitude,this paper gave out the universality synthetic mathematics expression of describing various earthquake anomalous precursory information magnitude.From the beginning of a large number of earthquake case's data,the problem of earthquake anomaly continuing effectiveness was studied again,and the mathematical relational expression of the earthquake anomaly lasting effective time and continuing time was established.The 371 observational items such as geochemistry,crust deformation,geomagnetism,earth stress,groundwater,apparent resistivity and so on with more than 1000000 precursory observational data were received and arranged during the period of 1980～1997 in North China.For every observational item,their earthquake anomalous precursory information magnitude were calculated one by one.The evolutional characteristics of earthquake anomalous precursory information field and its relation with seismicity in last 20 years in North China had been studied.The index system of medium\| and short\|term synthetic prediction of earthquakes with M≥5.0 in North China was established.Through inspection of R value's method,it shows that the index system of earthquake synthetic prediction has a certain effect in medium\| and short\|term earthquake prediction.

关 键 词：地震异常 演化特征 地震预报 地震前光信息量 

分 类 号：P315.7[天文地球—地震学]