A theoretical investigation of the hydrodynamic conditions for equilibrium island morphology in anabranching rivers
文献类型：EI期刊论文
| 作者 | Huang Heqing |
| 发表日期 | 2014 |
| 关键词 | Rivers Flowmeters Morphology Sediment transport |
| 英文摘要 | The equilibrium condition of island morphology is of great importance to the understanding of the self-adjusting mechanism of anabranching rivers. Based on the basic flow relationships of continuity, resistance, sediment transport and energy conservation, the equilibrium condition of a two-channel anabranching system with the island planform of approximately a triangular form is derived theoretically by applying a variational approach. The results show that when the anabranching river achieves stationary equilibrium, the main channel with a larger carrying capacity takes a larger proportion of sediment load than the proportion of flow discharge. The shape of island morphology in equilibrium varies with the proportions of flow discharge and sediment load passing into the two channels. The smaller the discrepancy between the proportions of flow discharge and sediment load, the slenderer the island shows. In addition, for Jianli anabranching reach located in the middle Yangtze River, it is demonstrated that the theoretically computed morphologies of the island are highly consistent with the field observations, with a relative error of about 9.0%. |
| 出处 | Shuikexue Jinzhan/Advances in Water Science
 |
| 卷 | 25期:4页:477-483 |
| 收录类别 | EI |
| 语种 | 英语 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/31178]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Huang Heqing. A theoretical investigation of the hydrodynamic conditions for equilibrium island morphology in anabranching rivers. 2014. |
入库方式： OAI收割
来源：地理科学与资源研究所
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