Topographical and geological variation of effective rainfall for debris-flow occurrence from a large-scale perspective
文献类型：期刊论文
| 作者 | Liu, Shuang2,3; Wei, Li1,2,3 ; Hu, Kaiheng2,3
|
| 刊名 | GEOMORPHOLOGY
 |
| 出版日期 | 2020-06-01 |
| 卷号 | 358页码:107134 |
| 关键词 | Debris flows Dimensionless effective rainfall Spatial heterogeneity Topographical and geological impacts |
| ISSN号 | 0169-555X |
| DOI | 10.1016/j.geomorph.2020.107134 |
| 产权排序 | 1 |
| 通讯作者 | Hu, Kaiheng(khhu@imde.ac.cn) |
| 文献子类 | Article |
| 英文摘要 | Understanding the spatial heterogeneity of the debris-flow rainfall threshold is meaningful for regional warning systems. However, regional topographical and geological impacts have not been well quantified. Using the Hengduan Mountains with distinct climatic, topographical, and geological settings as a typical study area, this study focused on the geological and topographical variations of effective rainfall for debris-flow occurrence from a large-scale perspective. Results showed that the probability of debris-flow occurrence was smallest in the cold-arid zone and largest in the humid zone. The mean dimensionless effective rainfall (the ratio of effective rainfall to mean annual precipitation) was about 5.2% for an initial warning and 7.7% for serious warnings. The contributions to the differences are regional climate, geomorphology, and geology, in sequence of importance. The zone with more complex terrain, thicker soil, and higher sand content would be more beneficial to debris-flow formation. Multiple regression analysis suggested that the geologically-related aspects may have a slightly greater effect than topographical factors on effective rainfall. In general, this work could be in favor of other similar regional, national, and even global work for debris-flow early warning. (C) 2020 Elsevier B.V. All rights reserved. |
| WOS关键词 | SHALLOW LANDSLIDES ; WENCHUAN EARTHQUAKE ; TRIGGERING RAINFALL ; HENGDUAN MOUNTAINS ; DURATION CONTROL ; TEMPORAL TRENDS ; THRESHOLDS ; INTENSITY ; IMPACT ; HAZARD |
| 资助项目 | National Key R&D Program of China[2018YFC1505205] ; National Natural Science Foundation of China[41790434] ; 135 Strategic Programof the Institute of Mountain Hazards and Environment, CAS[SDS-QN-1907] |
| WOS研究方向 | Physical Geography ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000527307400019 |
| 出版者 | ELSEVIER |
| 资助机构 | National Key R&D Program of China ; National Natural Science Foundation of China ; 135 Strategic Programof the Institute of Mountain Hazards and Environment, CAS |
| 源URL | [http://ir.imde.ac.cn/handle/131551/34576]  |
| 专题 | 成都山地灾害与环境研究所_山地灾害与地表过程重点实验室 |
| 通讯作者 | Hu, Kaiheng |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China; 3.Chinese Acad Sci, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610041, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Liu, Shuang,Wei, Li,Hu, Kaiheng. Topographical and geological variation of effective rainfall for debris-flow occurrence from a large-scale perspective[J]. GEOMORPHOLOGY,2020,358:107134. |
| APA | Liu, Shuang,Wei, Li,&Hu, Kaiheng.(2020).Topographical and geological variation of effective rainfall for debris-flow occurrence from a large-scale perspective.GEOMORPHOLOGY,358,107134. |
| MLA | Liu, Shuang,et al."Topographical and geological variation of effective rainfall for debris-flow occurrence from a large-scale perspective".GEOMORPHOLOGY 358(2020):107134. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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