Landslides induced by the 2008 Wenchuan earthquake, Sichuan, China
Landslides induced by the 2008 Wenchuan earthquake, Sichuan, China
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DOI：
10.1016/j.geomorph.2010.01.003
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发表时间：
2010-06-01
期刊：
影响因子：
3.9
通讯作者：
Wang, Gonghui
中科院分区：
文献类型：
--
作者：
Chigira, Masahiro;Wu, Xiyong;Wang, Gonghui
2008年汶川Mw7.9级地震在断层地表破裂的上盘以及岷江沿岸陡峭的山谷内引发了大量的边坡运动。滑坡移动方向呈现出垂直于断层破裂的优势取向，这表明了地震波方向性的影响。最常见的滑坡发生在碳酸盐岩中，这类岩石容易溶解，从而减少了接触面。地震在层状白云岩中引发了历史上最大的非火山滑坡，并且在此之前出现了伴有山脊顶部凹陷的重力变形。山谷填充物质在36个地点被激活，可能是由于孔隙水压力的增加。（C）2010爱思唯尔有限公司。版权所有。
The 2008 Wenchuan earthquake with a magnitude of Mw 7.9 induced numerous slope movements on the hanging walls of fault surface ruptures and on steep inner valleys along the Minjiang River. Landslide moving directions showed preferred orientations normal to the fault ruptures, indicating the effect of the directivity of the seismic wave. The most common landslides were of carbonate rocks, which are easily dissolved and decrease the contact surfaces. The largest non-volcanic landslide in history was induced in bedded dolomite by the earthquake, and was preceded by gravitational deformation with ridge-top depressions. Valley-fill materials were mobilized at 36 locations, probably by pore water pressure build up. (C) 2010 Elsevier B.V. All rights reserved.