Grain composition and erosive equilibrium of debris flows
文献类型：期刊论文
| 作者 | Li Yong1 ; Liu Jingjing; Chen Xiaoqing; Wei Fangqiang
|
| 刊名 | JOURNAL OF MOUNTAIN SCIENCE
 |
| 出版日期 | 2007-03-01 |
| 卷号 | 4期号:1页码:71-76 |
| ISSN号 | 1672-6316 |
| 关键词 | grain composition fractal erosion equilibrium debris flow |
| 合作状况 | 其它 |
| 英文摘要 | Debris flows consist of grains of various sizes ranging from 10(-6) m similar to 1 m. Field observations in the Jiangjia Gully (JJG) and other sites throughout China indicate that the grain size distribution of sediment in debris flows can be characterized by an exponential function fit to the cumulative distribution. The exponent value for the function varies by location and may be useful in distinguishing between debris flows from different valleys. For example, minimum values and ranges of the exponent are associated with the high frequency of debris flows in the JJG. Furthermore, the distribution presents piecewise fractality (i.e. scaling laws hold in various ranges of the grain size) and. we propose that the fractal structure determines the matrix and that the fractal dimension plays a crucial role in material exchange between a debris flow and the substrate it flows over. Finally, the empirical data support an exponential relation between grain composition and non-dimensional shear stress for the critical state of the channel. Overall we propose a material-determinism approach to studying debris flows which contrasts with the enviro-determinism that has dominated much recent work in this field. |
| 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] | LONG RUNOUT LANDSLIDES ; SELF-LUBRICATION ; RIVERS ; BED ; MOTION |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000254449100006 |
| 公开日期 | 2010-11-09 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/2481]  |
| 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, Peoples R China 2.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China 3.Minist Water Conservancy & Power, Chengdu 610041, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li Yong,Liu Jingjing,Chen Xiaoqing,et al. Grain composition and erosive equilibrium of debris flows[J]. JOURNAL OF MOUNTAIN SCIENCE,2007,4(1):71-76. |
| APA | Li Yong,Liu Jingjing,Chen Xiaoqing,&Wei Fangqiang.(2007).Grain composition and erosive equilibrium of debris flows.JOURNAL OF MOUNTAIN SCIENCE,4(1),71-76. |
| MLA | Li Yong,et al."Grain composition and erosive equilibrium of debris flows".JOURNAL OF MOUNTAIN SCIENCE 4.1(2007):71-76. |
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。