基于应变释放阶段的华北第三、四活动期地震幕划分  

Seismic episode division in the 3rd and 4th active periods in North China based on stages of strain release

作　　者：朱红彬[1] 邢成起[1] 李红[1] 杨明波[1] 韩孔艳[1] 

机构地区：[1]北京市地震局,北京100038

出　　处：《地球物理学进展》2010年第5期1560-1567,共8页Progress in Geophysics

基　　金：北京市地震局任务性科技专项(JZX-201001);中国地震局专项"大华北地区主要地震构造带基础信息与强震活动特征研究"共同资助

摘　　要：华北地区第三、四活动期强震应变释放存在起始—加速—平稳—高潮—调整的阶段性特征.结合两个活动期M≥6地震时序特征和应变释放的阶段性特点,将华北地区第三活动期划分为4个平静幕和5个活跃幕,将第四活动期迄今划分为4个平静幕和4个活跃幕.认为两个活动期相应活跃幕在时间进程上有较好的一致性,反映了一个地震活动期内的强震活动规律,可以对比并预测未来的强震活动.Strain release of strong earthquakes in the 3rd and 4th active periods in North China has phase characteristics as start-speed-smooth-climax-adjustment. Combining the timing characteristics and strain release phase feature of M≥6 earthquakes in the two active periods ,the 3rd active period in North China is divided into 4 quiescence episodes and 5 active episodes,while the 4th into 4 quiescence episodes and 4 active episodes.The corresponding active episodes of the two active periods have good consistency in timing process,which reflects the law of strong earthquakes in a seismic active period,which allow us to compare and predict the future strong earthquakes.

关 键 词：华北地区 活动期 活跃幕 强震 应变释放阶段 

分 类 号：P315[天文地球—地震学]