Based on the geological tectonics, aftershock activity, earthquake surface rupture and peak ground motion, the geometric and dynamic characteristics of seismogenic tectonics about the 1995 Hanshin earthquake are analy...Based on the geological tectonics, aftershock activity, earthquake surface rupture and peak ground motion, the geometric and dynamic characteristics of seismogenic tectonics about the 1995 Hanshin earthquake are analysed. Nojima fault and Rokko fault have the same trending direction, but opposite dips. Their rising and falling plates are in symmetrically diagonal distribution. The two faults can be defined as thrust strike slip faults and constitute a pivotal strike slip fault. The earthquake just occurred at the pivot, which is the seismotectonics for the earthquake to develop and occur. The pivotal movement along a strike slip fault often leads to the occurrence of large earthquakes, whose dynamic process can be demonstrated by the stress analysis on the torsion of a beam with rectangle section. The displacement of earthquake surface rupture, aftershock density and peak acceleration change in a certain range of epicentral distance just similar as the shear stress changes from the center to the sides in the rectangle section. The distribution characteristics of the heaviest damage areas are also discussed in the article from the aspects of special geological tectonics and seismotectonic condition. The result obtained from the article can be applied not only to realizing the potencial earthquake sources in middle long time, but also to build reasonably the prediction model about earthquake hazard.展开更多
近年来,世界范围的巨震频发给人类的正常生产生活以及全球经济的快速发展造成了严重的影响。尤其是破坏性地震发生后,如何快速高效地进行受灾地区的恢复重建,已成为世界各国震后重建决策者和相关学者的研究热点。结合笔者2013年年初赴...近年来,世界范围的巨震频发给人类的正常生产生活以及全球经济的快速发展造成了严重的影响。尤其是破坏性地震发生后,如何快速高效地进行受灾地区的恢复重建,已成为世界各国震后重建决策者和相关学者的研究热点。结合笔者2013年年初赴日参加"Pre-Recovery Planning From Natural Disasters"研修班中,对阪神地震以及"3.11"东日本地震海啸恢复重建的学习和考察内容,总结了两次地震恢复重建的特点以及现状,并对比了我国汶川地震恢复重建的相关数据和案例,分析了中日两国在地震恢复重建中的各自优点与不足,并针对未来我国可能面对的大震恢复重建工作,提出了一些新的思路和方法,对了解中日两国地震恢复重建工作的各自特点,以及未来如何完善现有恢复重建方案的设计和提高相关重建服务的效率,具有一定的理论和实际意义。展开更多
文摘Based on the geological tectonics, aftershock activity, earthquake surface rupture and peak ground motion, the geometric and dynamic characteristics of seismogenic tectonics about the 1995 Hanshin earthquake are analysed. Nojima fault and Rokko fault have the same trending direction, but opposite dips. Their rising and falling plates are in symmetrically diagonal distribution. The two faults can be defined as thrust strike slip faults and constitute a pivotal strike slip fault. The earthquake just occurred at the pivot, which is the seismotectonics for the earthquake to develop and occur. The pivotal movement along a strike slip fault often leads to the occurrence of large earthquakes, whose dynamic process can be demonstrated by the stress analysis on the torsion of a beam with rectangle section. The displacement of earthquake surface rupture, aftershock density and peak acceleration change in a certain range of epicentral distance just similar as the shear stress changes from the center to the sides in the rectangle section. The distribution characteristics of the heaviest damage areas are also discussed in the article from the aspects of special geological tectonics and seismotectonic condition. The result obtained from the article can be applied not only to realizing the potencial earthquake sources in middle long time, but also to build reasonably the prediction model about earthquake hazard.
文摘近年来,世界范围的巨震频发给人类的正常生产生活以及全球经济的快速发展造成了严重的影响。尤其是破坏性地震发生后,如何快速高效地进行受灾地区的恢复重建,已成为世界各国震后重建决策者和相关学者的研究热点。结合笔者2013年年初赴日参加"Pre-Recovery Planning From Natural Disasters"研修班中,对阪神地震以及"3.11"东日本地震海啸恢复重建的学习和考察内容,总结了两次地震恢复重建的特点以及现状,并对比了我国汶川地震恢复重建的相关数据和案例,分析了中日两国在地震恢复重建中的各自优点与不足,并针对未来我国可能面对的大震恢复重建工作,提出了一些新的思路和方法,对了解中日两国地震恢复重建工作的各自特点,以及未来如何完善现有恢复重建方案的设计和提高相关重建服务的效率,具有一定的理论和实际意义。
