气候变化领域集成服务门户(CCPortal): Rainfall-induced landslides assessment in the Fengjie County, Three-Gorge reservoir area, China

CCPortal

DOI	10.1007/s11069-021-04691-z
	Rainfall-induced landslides assessment in the Fengjie County, Three-Gorge reservoir area, China
	Wang K.; Zhang S.
发表日期	2021
ISSN	0921030X
起始页码	451
结束页码	478
卷号	108 期号:1
英文摘要	It is critical to accurately assess the location and evolution of impending landslide hazards, especially when influenced by the effects of climate change. However, most existing landslide models only analyze the stability of individual grid cells without considering soil interaction between adjacent cells. This means that the stability of individual grid cells is not necessarily representative of actual slope stability at a given location, in turn affecting the accuracy of landslide stability assessments. In this paper, slope units are defined using the morphological image analysis and homogeneous slope unit method to represent the actual slope conditions and to extract the profile of each slope unit. The critical slip surface of the soil mass is investigated to account for the interaction between adjacent grid cells within the slope unit. A probabilistic analytical landslide model is established and the response mechanism of the hydrological processes is proposed. This model is applied to landslide hazard assessment in the Three-Gorges Reservoir Area, Fengjie County, China. Using historical rainfall data, the distribution of landslide hazards is analyzed for different antecedent precipitation levels and rainfall return periods. The results show that the amount of antecedent precipitation, and rainfall return period, have different effects on landslide triggering in the area. Importantly, the model reveals that extreme rainfall events induced by climate change will lead to a large number of new landslides in areas where they are not anticipated. Further investigation and monitoring (e.g., early-warning systems, long-term assessment) of rainfall-induced landslides in the Three-Gorges Reservoir Area is recommended. © 2021, The Author(s), under exclusive licence to Springer Nature B.V.
关键词	Antecedent rainfall Landslide hazard Rainfall return period Slope unit
语种	英语
来源期刊	Natural Hazards
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/206643
作者单位	Department of Geology, State Key Laboratory of Continental Dynamics, Northwest University, Xi′an, 710069, China; Institute of Civil Engineering, Zhongyuan University of Technology, Zhengzhou, 450007, China; Key Laboratory of Mountain Hazards and Earth Surface Process, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, 610041, China
推荐引用方式 GB/T 7714	Wang K.,Zhang S.. Rainfall-induced landslides assessment in the Fengjie County, Three-Gorge reservoir area, China[J],2021,108(1).
APA	Wang K.,&Zhang S..(2021).Rainfall-induced landslides assessment in the Fengjie County, Three-Gorge reservoir area, China.Natural Hazards,108(1).
MLA	Wang K.,et al."Rainfall-induced landslides assessment in the Fengjie County, Three-Gorge reservoir area, China".Natural Hazards 108.1(2021).