line-level: 2" class=MsoNormal>Analysis and Prediction of the Spatial Distribution of Landslides Triggered by Wenchuan Earthquakes in Leiguzhen Region
详细信息
- 责任者：Chen Xiaoli (Institute of Geology ; China Earthquake Administration ; Beijing 100029 ; China) ; Zhou Bengang
- 刊名：Journal of Jilin University
- 出版年：2010
- 卷期：40(6)
- 关键词：汶川地震2008 ; Wenchuan earthquake 2008 ; 滑坡 ; landslides ; 四川 ; Sichuan Province
- 页码：p.1371-1379
- 图表：4 illus., 6 tables, 27 refs.
- 分类号：1800
- issnNo：ISSN1671-5888
- isbnNo：CN22-1343/P
摘要
The Wenchuan Earthquake in 8.0 Ms on May 12 triggered a lot of slopes to failure including landslides, rock falls and debris flows. The study area is about 180 km2 and located at Leiguzhen of Beichuan region where the slope-failure hazard is severe. The slope gradient, elevation and aspect are chosen as the influencing factors of the slope-failure distribution. Their relationships with the distribution of slope failures are analyzed using CF and Rji. The research shows that:1) landslides occurred more frequently at the elevation lower than 1 000 m; 2) with the increasing of the slope gradient, the occurrence probability of the slope failure becomes higher. The slope failures concentrate in the areas with the gradient greater than 30°; and 3) more slope failures occurred at the slopes facing E, NE, and SE. Both predict methods based on factors susceptibility analysis and discrimination analysis, show consistently in the zoning results of high hazard and low hazard.
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