The Distribution of Landslide Triggered by Wenchuan Earthquake and Its Causative Factors

• 责任者：Guo Zhaocheng (Institute of Geographic Sciences and Natural Resources Research ; Chinese Academy of Sciences ; Beijing 100101 ; China) ; Zhou Chenghu
• 刊名：Earth Science Frontiers
• 出版年：2010
• 卷期：17(5)
• 关键词：崩塌 ; avalanches ; 地质灾害 ; geologic hazards ; 龙门山断裂带 ; Longmenshan Fault Zone
• 页码：p.234-242
• 图表：6 illus., 4 tables, 26 refs.
• 分类号：1800
• issnNo：ISSN1005-2321
• isbnNo：CN11-3370/P

///Landslide triggered by Wenchuan earthquake was interpreted based on multi-source remote sensing data. A logistic regression model was built between the landslide distribution and the control factors of the landslide. The number of landslide area interpreted was 5145, which covered a total area of 1139 km². By using spatial analysis technology, it is found that: 1) there are two types of distribution patterns existing in the landslide, one is a linear distribution along seismogenic fault and another is cluster-like around epicenter of Wenchuan earthquake; 2) in the Ⅹ and Ⅺ degree seismic intensity zones, there are 73.2% landslide area and in the other region with Ⅷ degree or Less seismic intensity, there are few landslides; and 3) the distribution of landslide was not only controlled by seismogenic fault rupture, but also affected by the topographic amplification and fault’s upper and lower plate; there is 90% landslide area located in the upper plate of seismogenic fault.