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大陆地震对人类威胁最重。全球大陆地震集中在北纬20°—50°地带,它们可分为四个相似的地震区。中蒙地震区和北美地震区的对比,能很好地揭示其相似的特征。中、美两个地震区的东半区都是相对的少震区,以北东向地震构造为主,均穿插北西向断续的地震构造,构成交叉的网络。此外,根据两地区地震强度和数量的分布,都可以分成几个近东西向的板条,每条之间在地震活动、地壳形变、新构造活动、重力、地磁、地壳结构、以及岩石圈结构等方面都表现了明显的差异。然而地震网络和岩石圈的板条分割这两种构造格局的综合作用,两个区域的表现都是相似的。在此控制下,也表现了某些震源构造的相似,如邢台地震与新马德里地震,泉州地震与查理斯顿地震。
The earthquake in China has the most serious threat to humanity. Earthquakes in the world are concentrated in the 20 ° -50 ° north latitude zone and they can be divided into four similar seismic zones. The comparison of the Mongolia-Seismic area and the North America earthquake area reveals its similar characteristics well. The eastern half of the two earthquake regions in China and the United States are all relatively small earthquake regions, with the NE-trending seismic structure dominated by seismic structures that are intersected intermittently in the northwest direction and form a crossed network. In addition, according to the distribution of seismic intensity and quantity in the two regions, they can be divided into several nearly east-west slabs. Each of them is characterized by seismic activity, crustal deformation, neotectonic activity, gravity, geomagnetism, crustal structure and lithospheric structure And other aspects have shown obvious differences. However, the combination of the seismic network and lithosphere laths has the combined effect of these two tectonic patterns, and the performance of the two regions is similar. Under this control, similarities are also shown in some focal structures, such as the Xingtai Earthquake and the New Madrid Earthquake, the Quanzhou Earthquake and the Charlesston Earthquake.