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	Comparison of hydraulic geometry between sand- and gravel-bed rivers in relation to channel pattern discrimination
	Xu J. X.
	2004
关键词	channel pattern hydraulic geometry sand-bed river gravel-bed river channel pattern discrimination
英文摘要	A comparison has been made between the hydraulic geometry of sand- and gravel-bed rivers, based on data from alluvial rivers around the world. The results indicate a significant difference in hydraulic geometry among sand- and gravel-bed rivers with different channel patterns. On this basis, some diagrams for discrimination of meandering and braided channel patterns have been established. The relationships between channel width and water discharge, between channel depth and water discharge, between width-depth ratio and water discharge and between channel slope and water discharge can all be used for channel pattern discrimination. The relationship between channel width and channel depth can also be used for channel pattern discrimination. However, the accuracy of these relationships for channel pattern discrimination varies, and the depth-discharge relationship is a better discriminator of pattern type than the classic slope-discharge function. The cause for this difference has been explained qualitatively. To predict the development of channel patterns under different natural conditions, the pattern discriminator should be searched on the basis of independent or at least semi-independent variables. The relationship between stream power and bed material grain size can be used to discriminate channel patterns, which shows a better result than the discriminator using the slope-discharge relationship. Copyright (C) 2004 John Wiley Sons, Ltd.
出处	Earth Surface Processes and Landforms
卷	29
期	5
页	645-657
收录类别	SCI
语种	英语
ISSN号	0197-9337
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/22694]
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.. Comparison of hydraulic geometry between sand- and gravel-bed rivers in relation to channel pattern discrimination. 2004.

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