地震序列的b值误差对h值判别法的影响  

The Influence of Error of b Value on the h-value Method in Earthquake Sequences

作　　者：李忠华[1] 苏有锦[1] 李永莉[1] 刘丽芳[1] 

机构地区：[1]云南省地震局,昆明650041

出　　处：《地震研究》2003年第z1期33-37,共5页Journal of Seismological Research

基　　金：国家"十五"科技攻关项目:西南地区地震活动短期预测方法研究 ( 2 0 0 1BA60 1B0 1-0 2 -0 2 ) .

摘　　要：从云南地区 196 5～ 1999年的地震序列中选取 2 8个序列 ,根据古登堡—里克特的地震频度与相应震级之间的公式、刘正荣的h值判别法 ,得到这些地震序列中一些主要地震后的b值、h值 ,并对由b值误差Δb导致的最大后续地震震级Mm 的误差ΔMm 进行定量分析。Mm 的误差的平均值大于 0 3,这可能是h >1时地震活动趋势预测多次误判的原因 ,在应用时应充分考虑到b值的误差Δb对Mm 的影响。Twenty-eight earthquake sequences from 1965 to 1999 in Yunnan region are select e d. The b value and h value of some important earthqu ake events in these selected sequences are obtained respectively according to Gutenberg-Richter relation and method of h value. The error of magnitude M m (nam ely ΔM m) of the consequent strong earthq uakes caused by the error of b value (namely Δb) is quantit atively analyzed. As a result, the average error of M m is larger tha n 0 3 and this may be the reason of some w rong misjudgments for the forecast of earthquake activity on the condition of h >1.So, the Influence of the error of b value (Δb) on t he v alue of magnitude (M m) should be taken into account.

关 键 词：地震序列 B值 H值 云南地区 

分 类 号：P315.8[天文地球—地震学]