Tectonic Analysis of Wenchuan Earthquake Collapse and Landslide Development Characteristics and Spatial Distribution Law
Tectonic Analysis of Wenchuan Earthquake Collapse and Landslide Development Characteristics and Spatial Distribution Law
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DOI：
10.1007/978-3-642-28744-2_98
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
F. Liu;Dewei Li;Demin Liu;Jiong Li;Huiming Tang
中科院分区：
文献类型：
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作者：
F. Liu;Dewei Li;Demin Liu;Jiong Li;Huiming Tang
汶川地震引发的崩塌和滑坡集中在成因断层的上盘，高密度区域主要位于成因断层（映秀-北川断层）30km半径的缓冲带。其机理和特征表现为不同于正常重力滑坡的抛射崩塌体、长距离滑坡体和抛射滑移体。本文通过地质调查、地球物理资料和遥感资料的解译，从深部构造及其浅层响应分析了地震崩塌和滑坡的发展特征和空间分布。
Collapses and landslides induced by Wenchuan earthquake concentrated in the hanging wall of causative fault, and high-density areas mainly located in the 30km radius buffer zone of the causative fault (Yingxiu - Beichuan fault). And its’ mechanism and characteristics showed collapses bodies launched, landslides bodies long-distance and throwing slided which were different from normal gravity slumps. This paper analysises the development characteristics and spatial distribution of earthquake collapses and landslides from the deep structure and its shallow surface response by geological survey and interpretation of the geophysical data and remote sensing data. The research suggests that many phenomena and problems related to the Wenchuan earthquake collapses and landslides are far beyond people’s previous cognition, and its development and distribution characteristics are closely related to lower crust flow of the Qinghai-Tibet plateau and the conversion between its horizontal and vertical movement, hence the mechanism of the earthquake is the key issue of earthquake collapse and landslide development.