【摘要】 在对我国西部本世纪第五个地震活跃幕以来地震群体活动时空强演变规律回顾的基础上，研究了近１～２年中强地震的分布特点，结合大地形变的演变状况，对本区地震活动进行了研究，并认为本区处于本活跃幕末的翘尾活动阶段。更多还原

【Abstract】 Based on the time-space intensity evolution of grouping seismicity during the seismically fifth active period since this century in western China, the distribution charac- teristics of moderately earthquakes in last 2 years has been studied. Combining with evolu- tional situation of geodetic deformation, the seismic activity is researched in the area. The conclusion is drawn as follows: the seismically active period is being in last re-activated stage.更多还原