青藏块体及其周边地震活动的迁移  

THE MIGRATION OF EARTHQUAKE ACTIVITY IN QINGHAI-TIBET PLATE AND IT′S PERIPHERY

作　　者：赵振才[1] 

机构地区：[1]国家地震局第二地形变监测中心

出　　处：《西北地震学报》1995年第2期26-32,共7页Northwestern Seismological Journal

摘　　要：地震活动迁移是地震群体活动的一个特征。它可以反映地震构造带活动特点及其地震动力作用概况。本文研究了青藏块体及其周边地区强震空间分布随时间变化的规律，发现自１８９７年以来地震活动有自南而北，再由北向南的往返迁移规律，而且这种迁移与地震活跃期有明显的对应关系。在此基础上，讨论了本区地震动力作用的演变及发展，进而对本区第Ｖ地震活跃期今后几年地震活动发展的趋势进行了判断。The migration of earthquake activity is a feature of earthquake activity,and it outlinesboth activity of seismotectonic zone and earthquake mechanics,In this paper,by studying thechange regularity of spatial distribution of strong earthquake with time in Qinghai-Tibet plateand its periphery,it was found that earthquake activities had migrated from south to norththen from north to south since 1978,and the migration had abvious relation with earthquakeactivity period.In view of the regularity,the evolution and development of the earthquakedynamics are discussed,thus the tendency of earthquake activities in the future few years isjudged.

关 键 词：地震活动性 迁移 地震群 青藏板块 

分 类 号：P315.5[天文地球—地震学]