气候变化领域集成服务门户(CCPortal): Regional landslide hazard assessment through integrating susceptibility index and rainfall process

CCPortal

DOI	10.1007/s11069-020-04265-5
	Regional landslide hazard assessment through integrating susceptibility index and rainfall process
	Wang Z.; Wang D.; Guo Q.; Wang D.
发表日期	2020
ISSN	0921030X
起始页码	2153
结束页码	2173
卷号	104 期号:3
英文摘要	Due to the difference of the spatial and temporal distribution of rainfall and the complex diversity of the disaster-prone environment (topography, geological, fault, and lithology), it is difficult to assess the hazard of landslides at the regional scale quantitatively only considering rainfall condition. Based on detailed landslide inventory and rainfall data in the hilly area in Sichuan province, this study analyzed the effects of both rainfall process and environmental factors on the occurrence of landslides. Through analyzing environmental factors, a landslide susceptibility index (LSI) was calculated using multiple layer perceptron (MLP) model to reflect the regional landslide susceptibility. Further, the characteristics of rainfall process and landslides were examined quantitatively with statistical analysis. Finally, a probability model integrating LSI and rainfall process was constructed using logistical regression analysis to assess the landslide hazard. Validation showed satisfactory results, and the inclusion of LSI effectively improved the accuracy of the landslide hazard assessment: Compared with only considering the rainfall process factors, the accuracy of the landslide prediction model both considering the rainfall process and landslide susceptibility is improved by 3%. These results indicate that an integration of susceptibility index and rainfall process is essential in improving the timeliness and accuracy of regional landslide early warning. © 2020, The Author(s).
关键词	Hazard assessment Landslides Logistic regression Susceptibility influence
英文关键词	accuracy assessment; early warning system; environmental factor; hazard assessment; landslide; precipitation intensity; prediction; rainfall; regional geology; spatial distribution; temporal distribution; China; Sichuan
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/205994
作者单位	Tianjin Key Laboratory of Soft Soil Characteristics and Engineering Environment, Tianjin Chengjian University, Tianjin, 300384, China; School of Geology and Geomatics, Tianjin Chengjian University, Tianjin, 300384, China; Department of Geography and Resource Management, The Chinese University of Hong Kong999077, Hong Kong
推荐引用方式 GB/T 7714	Wang Z.,Wang D.,Guo Q.,et al. Regional landslide hazard assessment through integrating susceptibility index and rainfall process[J],2020,104(3).
APA	Wang Z.,Wang D.,Guo Q.,&Wang D..(2020).Regional landslide hazard assessment through integrating susceptibility index and rainfall process.Natural Hazards,104(3).
MLA	Wang Z.,et al."Regional landslide hazard assessment through integrating susceptibility index and rainfall process".Natural Hazards 104.3(2020).