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Factors controlling the spatial distribution of coseismic landslides triggered by the Mw 6.1 Ludian earthquake in China

文献类型：期刊论文

作者Zou, Yu1,2,3; Qi, Shengwen1,2,3; Guo, Songfeng1,2,3; Zheng, Bowen1,2,3; Zhan, Zhifa4; He, Naiwu5; Huang, Xiaolin1,2,3; Hou, Xiaokun1,2,3; Liu, Haiyang1,2,3
刊名ENGINEERING GEOLOGY
出版日期2022
卷号296页码:22
ISSN号0013-7952
关键词Ludian earthquake Spatial analysis Landslide concentration Coseismic landslides Engineering disturbance
DOI10.1016/j.enggeo.2021.106477
英文摘要Understanding the spatial distribution regularity of coseismic landslides is important for mitigation in future earthquakes. Unveiling the controlling factors of the distribution of coseismic landslides is a long-standing unsolved problem. On 3 August 2014, a Mw 6.1 earthquake occurred in Ludian County, Yunnan Province, China, and resulted in a great number of landslides and substantial losses. The coseismic landslide distribution in this earthquake, which was triggered by an unmapped fault, shows a different pattern. This paper conducted a spatial analysis to reveal the controlling factors in the Ludian earthquake. A spatial database of landslides has been built by interpreting the ZY-3 pre-earthquake, unmanned aerial vehicle (UAV), GeoEye-1 and GF-1 post-earthquake. A total of 1414 landslides were identified after a combination of image interpretation and field investigation in an area of 704.7 km(2). The geological setting of the study area, including the tectonics and lithology, has been mapped in detail. The digital elevation model (DEM) of the study area with a resolution of 30 m x 30 m was presented to address the topographic characteristics. A geographic information system (GIS) was used to analyse the spatial characterization of the landslides. Correlations between the occurrences of landslides and factors, i.e., slope gradient, elevation, slope aspect, intensity, distance to coseismic fault, distance to the epicentre, lithology, distance to non-coseismic faults, distance to rivers and distance to road, were characterized with a spatial analysis in GIS. It can be concluded that the slope gradient and the distance to the coseismic fault are the two most important factors for determining the spatial distribution of coseismic disasters. Some other factors play a role by influencing the slope gradient to a certain extent, and the movement of the coseismic fault is the prone direction of coseismic landslides. Slope cutting fractures the rock mass, increases the slope gradient, and significantly increases the occurrence of coseismic landslides. A statistics analysis indicates that the landslide concentration (LC) generally has an obvious exponential decrease with an increasing distance to the coseismic fault, while it has a good Weibull cumulative distribution with the slope gradient.
WOS关键词2008 WENCHUAN EARTHQUAKE ; 2013 LUSHAN EARTHQUAKE ; DISTRIBUTION PATTERN ; LOMA-PRIETA ; HAZARD ; YUNNAN ; FAULT ; SUSCEPTIBILITY ; TOPOGRAPHY ; PROVINCE
资助项目Second Tibetan Plateau Scientific Expedition and Research Program (STEP)[2019QZKK0904] ; National Natural Science Foundation of China[41825018] ; National Natural Science Foundation of China[42090051] ; National Natural Science Foundation of China[41941018] ; National Natural Science Foundation of China[42077266] ; National Natural Science Foundation of China[41672307] ; National Natural Science Foundation of China[41790442] ; Key Deployment Program of the Chinese Academy of Sciences[KFZD-SW-422]
WOS研究方向Engineering ; Geology
语种英语
出版者ELSEVIER
WOS记录号WOS:000787902300001
资助机构Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Deployment Program of the Chinese Academy of Sciences ; Key Deployment Program of the Chinese Academy of Sciences ; Key Deployment Program of the Chinese Academy of Sciences ; Key Deployment Program of the Chinese Academy of Sciences ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Deployment Program of the Chinese Academy of Sciences ; Key Deployment Program of the Chinese Academy of Sciences ; Key Deployment Program of the Chinese Academy of Sciences ; Key Deployment Program of the Chinese Academy of Sciences ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Deployment Program of the Chinese Academy of Sciences ; Key Deployment Program of the Chinese Academy of Sciences ; Key Deployment Program of the Chinese Academy of Sciences ; Key Deployment Program of the Chinese Academy of Sciences ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Deployment Program of the Chinese Academy of Sciences ; Key Deployment Program of the Chinese Academy of Sciences ; Key Deployment Program of the Chinese Academy of Sciences ; Key Deployment Program of the Chinese Academy of Sciences
源URL[http://ir.iggcas.ac.cn/handle/132A11/105176]  
专题地质与地球物理研究所_中国科学院页岩气与地质工程重点实验室
通讯作者Qi, Shengwen
作者单位1.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn KLSGG, Beijing 100029, Peoples R China
3.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
4.China Renewable Energy Engn Inst, Beijing 100120, Peoples R China
5.China Highway Engn Consulting Corp, Beijing 100089, Peoples R China
推荐引用方式
GB/T 7714		 Zou, Yu,Qi, Shengwen,Guo, Songfeng,et al.

Factors controlling the spatial distribution of coseismic landslides triggered by the Mw 6.1 Ludian earthquake in China

[J]. ENGINEERING GEOLOGY,2022,296:22.
APA Zou, Yu.,Qi, Shengwen.,Guo, Songfeng.,Zheng, Bowen.,Zhan, Zhifa.,...&Liu, Haiyang.(2022).

Factors controlling the spatial distribution of coseismic landslides triggered by the Mw 6.1 Ludian earthquake in China

.ENGINEERING GEOLOGY,296,22.
MLA Zou, Yu,et al."

Factors controlling the spatial distribution of coseismic landslides triggered by the Mw 6.1 Ludian earthquake in China

".ENGINEERING GEOLOGY 296(2022):22.

入库方式： OAI收割

来源：地质与地球物理研究所

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