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DOI	10.1029/2020GL090493
	A Universal Form of Power Law Relationships for River and Stream Channels
	Xu F.; Coco G.; Zhou Z.; Townend I.; Guo L.; He Q.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:20
英文摘要	The description of the geomorphic characteristics in power law forms has been the subject of research, over the past 70 years, and has become the cornerstone of regime theory. However, just why power functions should represent such geomorphic relationships remains poorly understood. Hence, differences in the values of the regime exponents observed for different river systems remain largely unexplained. To address this issue, we derived generic forms of the power law relationships without postulating any power functions of the discharge. The theoretical approach accurately captures the systematic variations of the regime exponents shown by a number of large data sets from previous research. We also explain how frictional resistance is responsible for the systematic variability of regime exponents. Overall, our study provides a robust mechanism to describe the variations of the exponents, along with a deductive explanation of the power laws at the core of fluvial hydraulic geometry. ©2020. The Authors.
英文关键词	Earth sciences; Geophysics; Fluvial hydraulics; Frictional resistance; Power functions; Power law relationship; Robust mechanisms; Stream channels; Systematic variation; Theoretical approach; Friction; fluvial geomorphology; geometry; power law; river channel; river discharge; stream channel
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169593
作者单位	State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai, China; Faculty of Science, University of Auckland, Auckland, New Zealand; State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing, China; College of Harbor, Coastal and Offshore Engineering, Hohai University, Nanjing, China; School of Ocean and Earth Sciences, University of Southampton, Southampton, United Kingdom
推荐引用方式 GB/T 7714	Xu F.,Coco G.,Zhou Z.,et al. A Universal Form of Power Law Relationships for River and Stream Channels[J],2020,47(20).
APA	Xu F.,Coco G.,Zhou Z.,Townend I.,Guo L.,&He Q..(2020).A Universal Form of Power Law Relationships for River and Stream Channels.Geophysical Research Letters,47(20).
MLA	Xu F.,et al."A Universal Form of Power Law Relationships for River and Stream Channels".Geophysical Research Letters 47.20(2020).