Debris flow formation process and critical hydrodynamic conditions in the meizoseismal area of the Wenchuan earthquake
文献类型：期刊论文
| 作者 | Wang Jun1,2,3 ; Yu Yan1,2,3; Pan Hua-li1,2; Qiao Cheng1,2,3; Ou Guo-qiang1,2
|
| 刊名 | JOURNAL OF MOUNTAIN SCIENCE
 |
| 出版日期 | 2015-05-01 |
| 卷号 | 12期号:3页码:699-710 |
| 关键词 | Wenchuan Earthquake Debris flow Disaster-prone environment Permeability characteristics Hydrodynamic condition |
| ISSN号 | 1672-6316 |
| 通讯作者 | PAN Hua-li |
| 英文摘要 | The Wenchuan earthquake generated strong surface disturbances and triggered a large number of loose deposits, resulting in the disaster-prone environment with special watershed hydrological characteristics. This paper was to propose a debris flow formation process and explore the permeability characteristics and critical hydrodynamic conditions of the loose deposits triggered by the earthquake. The Guo Juanyan gully (31A degrees 05'27aEuro(3) N to 31A degrees 05'46aEuro(3) N, 103A degrees 36'58aEuro(3) E to 103A degrees 37'09aEuro(3) E) in Du Jiangyan City, located in the meizoseismal areas of the Wenchuan earthquake, was chosen as the study area and the disaster-prone environment was analyzed. The formation process of the debris flow was first proposed using a stability analysis, and then, the permeability characteristics of loose deposits were determined via in situ permeability experiments. Finally, the critical 1 h rainfall was simulated through a distributed hydrological model and verified by field observations. The formation process of debris flow could be divided into three stages based on the relationship between the hydrodynamic force and loose deposit resistance. The critical 1 h rainfall amounts under three antecedent moisture conditions (I-dry, II-normal and Ill-wet) were 52 mm/h, 43 mm/h and 34 mm/h, respectively. This study proposed a debris flow formation process in the meizoseismal areas of the Wenchuan earthquake based on the stability analysis and defined the rainfall threshold for debris flow early warning at the local level, which is significant for debris flow mitigation and risk management. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 类目[WOS] | Environmental Sciences |
| 研究领域[WOS] | Environmental Sciences & Ecology |
| 关键词[WOS] | RUNOFF |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000355429000016 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/9104]  |
| 专题 | 成都山地灾害与环境研究所_Journal of Mountain Science _Journal of Mountain Science-2015_Vol12 No.3 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 |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610041, Peoples R China 2.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang Jun,Yu Yan,Pan Hua-li,et al. Debris flow formation process and critical hydrodynamic conditions in the meizoseismal area of the Wenchuan earthquake[J]. JOURNAL OF MOUNTAIN SCIENCE,2015,12(3):699-710. |
| APA | Wang Jun,Yu Yan,Pan Hua-li,Qiao Cheng,&Ou Guo-qiang.(2015).Debris flow formation process and critical hydrodynamic conditions in the meizoseismal area of the Wenchuan earthquake.JOURNAL OF MOUNTAIN SCIENCE,12(3),699-710. |
| MLA | Wang Jun,et al."Debris flow formation process and critical hydrodynamic conditions in the meizoseismal area of the Wenchuan earthquake".JOURNAL OF MOUNTAIN SCIENCE 12.3(2015):699-710. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。