Non-capacity transport of non-uniform bed load sediment in alluvial rivers
文献类型：期刊论文
| 作者 | CAO Zhi-xian; HU Peng; PENDER Gareth; LIU Huai-han |
| 刊名 | Journal of Mountain Science
 |
| 出版日期 | 2016-03 |
| 卷号 | 13期号:3页码:377-396 |
| 关键词 | Fluvial process Sediment transport Bed deformation Non-uniform bed load Capacity transport |
| ISSN号 | 1672-6316 |
| 通讯作者 | CAO Zhi-xian |
| 英文摘要 | Rivers often witness non-uniform bed load sediment transport. For a long time, non-uniform bed load transport has been assumed to be at capacity regime determined exclusively by local flow. Yet whether the capacity assumption for non-uniform bed load transport is justified remains poorly understood. Here, the relative time scale of non-uniform bed load transport is evaluated and non-capacity and capacity models are compared for both aggradation and degradation cases with observed data. As characterized by its relative time scale, the adaptation of non-uniform bed load to capacity regime should be fulfilled quickly. However, changes in the flow and sediment inputs from upstream or tributaries hinder the adaptation. Also, the adaptation to capacity regime is size dependent, the finer the sediment size the slower the adaptation is, and vice versa. It is shown that the capacity model may entail considerable errors compared to the non-capacity model. For modelling of non-uniform bed load, non-capacity modelling is recommended, in which the temporal and spatial scales required for adaptation are explicitly appreciated. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/14083]  |
| 专题 | 成都山地灾害与环境研究所_Journal of Mountain Science _Journal of Mountain Science-2016_Vol13 No.3 |
| 推荐引用方式 GB/T 7714 | CAO Zhi-xian,HU Peng,PENDER Gareth,et al. Non-capacity transport of non-uniform bed load sediment in alluvial rivers[J]. Journal of Mountain Science,2016,13(3):377-396. |
| APA | CAO Zhi-xian,HU Peng,PENDER Gareth,&LIU Huai-han.(2016).Non-capacity transport of non-uniform bed load sediment in alluvial rivers.Journal of Mountain Science,13(3),377-396. |
| MLA | CAO Zhi-xian,et al."Non-capacity transport of non-uniform bed load sediment in alluvial rivers".Journal of Mountain Science 13.3(2016):377-396. |
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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