A comparative study of hydraulic geometry between sand- and gravel-bed rivers based on a large database
文献类型：会议论文
| 作者 | Xu J. X. |
| 出版日期 | 2004 |
| 关键词 | sand-bed river gravel-bed river channel width channel depth channel slope flow velocity hydraulic geometry |
| 页码 | 1326-1331 |
| 英文摘要 | Hydraulic geometry is an important subject in the study of alluvial rivers. So far, little research has been devoted to the comparison of hydraulic geometries between sand- and gravel-bed rivers. Based on a large database composed of the data from 270 rivers, this comparative study has been made. The bankfull width (B) - discharge (Q(bf)) relationship of sand-bed rivers shows basically no difference from that of gravel-bed rivers, and the grain size of bed material has little influence on the B-Q(bf) relationship. When the discharge is given, the bankfull depth of sand-bed rivers is significantly larger than that of gavel-bed rivers, the bankfull slope is gentler, and the flow velocity at bankfull discharge is lower. When all data are put together without differentiating sand- and gavel-bed rivers, the relationship between flow velocity and bankfull discharge shows some non-linear variation. The flow velocity increases with the increased discharge to some peak, followed by a decline. This non-linearity may be attributed to the different manners for the sand- and gavel-bed rivers in which the flow velocity is adjusted to the changing discharge. |
| 收录类别 | CPCI |
| 会议录出版者 | Tsinghua University Press |
| 语种 | 英语 |
| ISBN号 | 7-302-09684-8 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/25340]  |
| 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 | Xu J. X.. A comparative study of hydraulic geometry between sand- and gravel-bed rivers based on a large database[C]. 见:. |
入库方式： OAI收割
来源：地理科学与资源研究所
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。