DOI: 10.1002/2016GL068210
论文题名: Quantifying the signature of sediment composition on the topologic and dynamic complexity of river delta channel networks and inferences toward delta classification
作者: Tejedor A. ; Longjas A. ; Caldwell R. ; Edmonds D.A. ; Zaliapin I. ; Foufoula-Georgiou E.
刊名: Geophysical Research Letters
ISSN: 0094-9167
EISSN: 1944-8898
出版年: 2016
卷: 43, 期: 7 起始页码: 3280
结束页码: 3287
语种: 英语
英文关键词: channel networks
; complexity
; delta
; delta classification
; graph theory
; sediment
Scopus关键词: Graph theory
; Sediments
; Channel network
; Complexity
; Delta
; In-coming sediments
; Network structures
; Physical mechanism
; Quantitative frameworks
; Sediment composition
; Complex networks
英文摘要: Deltas contain complex self-organizing channel networks that nourish the surface with sediment and nutrients. Developing a quantitative understanding of how controlling physical mechanisms of delta formation relate to the channel networks they imprint on the landscape remains an open problem, hindering further progress on quantitative delta classification and understanding process from form. Here we isolate the effect of sediment composition on network structure by analyzing Delft3D river-dominated deltas within the recently introduced graph-theoretic framework for quantifying complexity of delta channel networks. We demonstrate that deltas with coarser incoming sediment tend to be more complex topologically (increased number of pathways) but simpler dynamically (reduced flux exchange between subnetworks) and that once a morphodynamic steady state is reached, complexity also achieves a steady state. By positioning simulated deltas on the so-called TopoDynamic complexity space and comparing with field deltas, we propose a quantitative framework for exploring complexity toward systematic inference and classification. © 2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84979487138&doi=10.1002%2f2016GL068210&partnerID=40&md5=6e3cc0b80375a4c67583643cbbc69b07
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10130
Appears in Collections: 科学计划与规划 气候变化与战略
There are no files associated with this item.
作者单位: National Center for Earth-surface Dynamics, St. Anthony Falls Laboratory, University of Minnesota, Twin Cities, Minneapolis, MN, United States
Recommended Citation:
Tejedor A.,Longjas A.,Caldwell R.,et al. Quantifying the signature of sediment composition on the topologic and dynamic complexity of river delta channel networks and inferences toward delta classification[J]. Geophysical Research Letters,2016-01-01,43(7).