气候变化领域集成服务门户(CCPortal): Controls of the Topological Connectivity on the Structural and Functional Complexity of River Networks

CCPortal

DOI	10.1029/2020GL087737
	Controls of the Topological Connectivity on the Structural and Functional Complexity of River Networks
	Ranjbar S.; Singh A.; Wang D.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:22
英文摘要	Catchments are complex systems containing channel networks and hillslopes. Channel networks interact with hillslopes and are pathways for transporting water, sediment, and nutrients. Understanding the branching and flux transport patterns of channel networks is critical for predicting the response of catchments to external forcing such as climate and tectonics. However, factors creating complexities in catchments are not fully understood. Here, we propose a new framework based on multiscale entropy approach to evaluate complexity of catchments using two different representations of channel networks. First, we investigate the structural complexity using the width-function, which characterizes the spatial arrangement of channels. Second, we utilize the incremental area-function along the main channel to study the functional complexity that captures the patterns of transport of fluxes. Our analysis reveals stronger controls of topological connectivity on the functional complexity than on structural complexity, indicating unchannelized surface (hillslope) contribution to the increase of heterogeneity in transport processes. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Catchments; Runoff; Topology; Channel network; External forcing; Functional complexity; Multi-scale entropies; Spatial arrangements; Structural complexity; Topological connectivity; Transport process; Complex networks; channel flow; connectivity; entropy; heterogeneity; hillslope; river channel; sediment transport; tectonic setting; topology
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/169451
作者单位	Department of Civil, Environmental, and Construction Engineering, University of Central Florida, Orlando, FL, United States
推荐引用方式 GB/T 7714	Ranjbar S.,Singh A.,Wang D.. Controls of the Topological Connectivity on the Structural and Functional Complexity of River Networks[J],2020,47(22).
APA	Ranjbar S.,Singh A.,&Wang D..(2020).Controls of the Topological Connectivity on the Structural and Functional Complexity of River Networks.Geophysical Research Letters,47(22).
MLA	Ranjbar S.,et al."Controls of the Topological Connectivity on the Structural and Functional Complexity of River Networks".Geophysical Research Letters 47.22(2020).