• 责任者：Xu Chong (Key Laboratory of Active Tectonics and Volcano ; Institute of Geology ; China Earthquake Administration ; Beijing 100029 ; China) ; Xu Xiwei
• 刊名：Seismology and Geology
• 出版年：2013
• 卷期：35(3)
• 关键词：震灾 ; seismic hazard ; 滑坡 ; landslides ; 四川 ; Sichuan Province
• 页码：p.641-660
• 图表：14 illus., 44 refs.
• 分类号：1800
• issnNo：ISSN0253-4967
• isbnNo：CN11-2192/P

     On April 20,2013, a strong earthquake of Ms 7.0 struck the Lushan County, Sichuan Province of China. In this paper, basic information of the April 20,2013 Lushan earthquake, historical earth- quakes in the Lushan earthquake struck area and associated historical earthquake-triggered landslides were introduced firstly. We delineated the probable spatial distribution boundary of landslides trig- gered by the Lushan earthquake based on correlations between the 2008 Wenchuan earthquake-trig- gered landslides and associated peak ground acceleration （PGA）. According to earthquake-triggered landslides classification principles,landslides triggered by the earthquake are divided into three main categories： disrupted landslides, coherent landslides, and flow landslides. The first main category in- cludes five types： rock falls, disrupted rock slides, rock avalanches, soil falls, and disrupted soil slides. The second main category includes two types of soil slumps and slow earth flows. The type of flow landslides is mainly rapid flow slides. Three disrupted landslides, including rock falls, disrupted rock slides,and soil falls are the most common types of landslides triggered by the earthquake. We preliminary mapped 3883 landslides based on available high-resolution aerial photographs taken soon after the earthquake. In addition,the effect of aftershocks on the landslides,comparisons of landslides triggered by the Lushan earthquake with landslides triggered by other earthquake events, and guidance for subsequent landslides detailed interpretation based on high-resolution remote sensing images were discussed respectively. In conclusion,based on quick field investigations to the Lushan earthquake, the classifications, morphology of source area, motion and accumulation area of many earthquake-trig- gered landslides were recorded before the landslide might be reconstructed by human factors, after- shocks, and rainfall etc. It has important significance to earthquake-triggered landslide hazard mitiga- tion in earthquake struck area and the scientific research of subsequent landslides related to the Lush- an earthquake.