DOI: 10.1002/grl.50843
论文题名: Observations of barrier island length explained using an exploratory morphodynamic model
作者: Roos P.C. ; Schuttelaars H.M. ; Brouwer R.L.
刊名: Geophysical Research Letters
ISSN: 0094-8677
EISSN: 1944-8408
出版年: 2013
卷: 40, 期: 16 起始页码: 4338
结束页码: 4343
语种: 英语
英文关键词: barrier coast
; equilibrium
; morphodynamic modeling
; multiple inlet systems
; stability
; tidal flow
Scopus关键词: Back barriers
; Bottom friction
; Destabilizing mechanisms
; Empirical relationships
; Model results
; Morphodynamic modeling
; Process-based modeling
; Tidal flow
; Convergence of numerical methods
; Dynamics
; Phase equilibria
; Tides
; Inlet flow
; competition (ecology)
; empirical analysis
; hydrodynamics
; lagoon
; morphodynamics
; numerical model
; observational method
; tidal current
; Australia
; Coral Sea
; Great Barrier Reef
; Pacific Ocean
; Queensland
英文摘要: Barrier coasts display a chain of islands, separated by tidal inlets that connect a back-barrier basin to a sea or ocean. Observations show that barrier island length generally decreases for increasing tidal range and increasing basin area. However, this has neither been reproduced in model studies nor explained from the underlying physics. This is the aim of our study. Here we simulate barrier coast dynamics by combining a widely used empirical relationship for inlet dynamics with a process-based model of the tidal hydrodynamics. Our model results show stable inlet systems with more than one inlet open that support the observed qualitative relationships and fit in existing barrier coast classifications. To explain this, we identify a competition between a destabilizing mechanism (bottom friction in inlets, tending to reduce the number of open inlets) and a stabilizing one (spatially varying pressure gradients over the inlets, tending to keep the inlets open). Key Points First model of mesotidal barrier coast dynamics with any number of inlets Observations of barrier island length vs tidal range and lagoon area reproduced Process-based explanation from spatially varying tide levels in sea and basin. © 2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84881659706&doi=10.1002%2fgrl.50843&partnerID=40&md5=09a2d00aa2e6c8c44eb2baa0b303c3b5
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5941
Appears in Collections: 气候减缓与适应
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作者单位: Department of Water Engineering and Management, University of Twente, P.O. Box 217, NL-7500 AE Enschede, Netherlands
Recommended Citation:
Roos P.C.,Schuttelaars H.M.,Brouwer R.L.. Observations of barrier island length explained using an exploratory morphodynamic model[J]. Geophysical Research Letters,2013-01-01,40(16).