华北地区中强地震活动周期的一些特征  

Characters of Medium and Strong Earthquake Activity Period of the North China

作　　者：边庆凯[1] 

机构地区：[1]河北省地震局,河北石家庄050021

出　　处：《山西地震》2000年第1期27-30,共4页Earthquake Research in Shanxi

摘　　要：介绍了确定中强震活动在时间上弱优势分布特征的方法 ,结合全国地震目录 ,对华北地区中小震弱优势分布的一些特征进行了分析 ,得出中小震活动在时间上弱优势分布峰值时间的经验公式 :t=0 .0 0 2 74× 10 ( - 1 .91 + 0 .86 * ML) ,根据历史地震资料得出中强震活动在时间上弱优势分布峰值时间的经验公式 :t=0 .0 0 2 74× 10 ( 0 .40 7+ 0 .5 38* M) ,采用外推的方法分析了华北地区强震活动周期的一些特征。结合震级—频度关系 ,分析了华北地区中强震活动周期的一些特征。The method of medium and strong earthquake having weak superiority distribution in time is introduced Using China Earthquake Catalogue, the weak superiority distribution characters of medium and small earthquakes in the North China are analy sed, the empirical formula of the peak time of weak superiority distribution of medium and small earthquake is required,it is t(year)=0 002 74×10 (-1 91+0 86M L) Using historical seismic data,the empirical formula of the peak time of weak superority distribution of medium and strong earthquake that t(year)=0 00274×10 (0 407+0 538M) ,is acquired The characteristics of strong earthquake activity period are analysed with these relations Using the relation of magnitude and frequence, characters of medium and strong earthquake activity in the North China are analysed

关 键 词：震级--频度关系 B值 地震活动度 华北构造区 

分 类 号：P315.5[天文地球—地震学]