Magnitude-frequency relations in debris flow
文献类型：期刊论文
| 作者 | Liu, J. J.1,2,3 ; Li, Y.1,2; Su, P. C.1,2,3; Cheng, Z. L.1,2
|
| 刊名 | ENVIRONMENTAL GEOLOGY
 |
| 出版日期 | 2008-09-01 |
| 卷号 | 55期号:6页码:1345-1354 |
| 关键词 | debris flow magnitude-frequency relation Jiangjia Gully |
| ISSN号 | 0943-0105 |
| 通讯作者 | J. J. Liu |
| 英文摘要 | Debris flow occurs frequently in mountainous regions in China. Because of the difficulties involved in predicting and catching live debris flows, an assessment of the potential for debris flow is crucial in hazard mitigation. Magnitude-frequency (MF) relations are of special significance in such assessments. In previous studies, MF relations have been inferred by analyzing environmental factors and historical records and using empirical relations. This paper is concerned with the derivation of MF relations at regional and valley scales, using a large database of statistics. At the regional scale, it is represented by the distribution of the valley area, because the area is often taken to indicate the potential magnitude of debris flow. Statistics from over 5,000 debris flow valleys in various provinces in China show that a power law holds for the distribution, i.e., p(A) similar to A(-n), where p(A) is the percentage of valleys with area A and n varies with region and thus describes regional differences. At the valley scale, a case study focusing on Jiangjia Gully (JJG) was conducted, and the MF relations derived from it were expressed by the distributions of discharge and runoff (i.e., the total volume) of living debris flows observed over the last 40 years. The distributions can be expressed as exponential functions where the exponents vary with the events. These MF relations provide not only a potential quantitative reference for practical purposes but also hint at the intrinsic properties of the debris flow. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences |
| 类目[WOS] | Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources |
| 研究领域[WOS] | Environmental Sciences & Ecology ; Geology ; Water Resources |
| 关键词[WOS] | HAZARD ASSESSMENT ; MODEL ; SIMULATION ; CHINA |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000258673500020 |
| 公开日期 | 2010-11-09 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/2484]  |
| 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, Key Lab Mt Hazards & Surface Proc, Chengdu 610041, Sichuan, Peoples R China 2.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Sichuan, Peoples R China 3.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, J. J.,Li, Y.,Su, P. C.,et al. Magnitude-frequency relations in debris flow[J]. ENVIRONMENTAL GEOLOGY,2008,55(6):1345-1354. |
| APA | Liu, J. J.,Li, Y.,Su, P. C.,&Cheng, Z. L..(2008).Magnitude-frequency relations in debris flow.ENVIRONMENTAL GEOLOGY,55(6),1345-1354. |
| MLA | Liu, J. J.,et al."Magnitude-frequency relations in debris flow".ENVIRONMENTAL GEOLOGY 55.6(2008):1345-1354. |
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。