Annual risk assessment on high-frequency debris-flow fans
文献类型：期刊论文
| 作者 | Hu, Kaiheng1,2 ; Li, Yong1,2; Wei, Fangqiang1,2
|
| 刊名 | NATURAL HAZARDS
 |
| 出版日期 | 2009-06-01 |
| 卷号 | 49期号:3页码:469-477 |
| ISSN号 | 0921-030X |
| 关键词 | Debris flow Alluvial fan Risk assessment Annual loss ratio Gamma function Probability model |
| 通讯作者 | Kaiheng Hu |
| 合作状况 | 国内 |
| 英文摘要 | An empirical model of debris-flow risk assessment is developed to estimate annual loss ratio on high-frequency debris-flow fans where more than one hazard events occur every year. Based on observations of debris flows in Jiangjia Ravine, Yunnan Province, China, it is found that Gamma distribution is more appropriate for describing the annual frequency than the exponential distribution, which is supposed to be a good description of the low-frequency cases. Further analyses reveal that the two parameters of Gamma distribution can be explained, respectively, as the number of factors which dominate debris-flow occurrence and one-third of the mean annual frequency. Given the expectation of loss ratio is unchanged for each event we deduced a simple relationship between the expectations of one-event and annual loss ratios. Combined with the Gamma model, an equation is proposed to calculate the expectation of the annual loss ratio, which can be also used to assess the potential risk of fans formed by high-frequency debris flows. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences ; Water Resources |
| 研究领域[WOS] | Geology ; Meteorology & Atmospheric Sciences ; Water Resources |
| 关键词[WOS] | OREGON COAST RANGE ; USA ; DEPOSITION ; HAZARD ; TAIWAN ; MODEL ; WOOD |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000265826000004 |
| 公开日期 | 2010-10-12 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/2137]  |
| 专题 | 成都山地灾害与环境研究所_成都山地所知识仓储（2009年以前） 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, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China 2.Chinese Acad Sci, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610041, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hu, Kaiheng,Li, Yong,Wei, Fangqiang. Annual risk assessment on high-frequency debris-flow fans[J]. NATURAL HAZARDS,2009,49(3):469-477. |
| APA | Hu, Kaiheng,Li, Yong,&Wei, Fangqiang.(2009).Annual risk assessment on high-frequency debris-flow fans.NATURAL HAZARDS,49(3),469-477. |
| MLA | Hu, Kaiheng,et al."Annual risk assessment on high-frequency debris-flow fans".NATURAL HAZARDS 49.3(2009):469-477. |
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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