【摘要】 根据高放废物处置库场址北山预选区的新构造运动特征,将其分为祁连山强烈隆升区、河西走廊差异沉降区、安西差异沉降区和北山弱隆升区。预选区内中、强地震集中分布于祁连山强烈隆升区和河西走廊差异沉降区,其中,5.0级以上地震的发生均与区内主要大型断裂带的活动有关。中、强地震的分布与新构造运动的活跃程度相关。新生代以来,青藏高原的NE向扩展、挤压和缩短是形成以上新构造运动格局及地震分布的动力来源。更多还原

【Abstract】 Beishan area for HLW disposal repository could be divided into four active parts:the strong uplift area in Qilianshan,the differential sedimental area in Hexi Corridor,the differential sedimental area in Anxi and the weak uplift area in Beishan.All those areas have different characters in neotectonics.Most of the earthquakes(M;S 4.0) in Beishan area focus on the strong uplift area in Qilianshan and the differential sedimental area in Hexi Corridor.The earthquakes(M≥5.0) occurred in large-scale faults.That means the relationship between neotectonics and large earthquakes is relatively notable.All these events told us the NE toward growth;compression and shortening of the Tibet Plateau set up the modern pattern of neotectonics and effect the distribution of earthquakes.更多还原