DOI: 10.1002/2013GL058494
论文题名: Impact of estuarine convergence on residual circulation in tidally energetic estuaries and inlets
作者: Burchard H. ; Schulz E. ; Schuttelaars H.M.
刊名: Geophysical Research Letters
ISSN: 0094-10420
EISSN: 1944-10151
出版年: 2014
卷: 41, 期: 3 起始页码: 913
结束页码: 919
语种: 英语
英文关键词: estuarine circulation
; estuarine convergence
; tidal asymmetry
Scopus关键词: Earth sciences
; Geophysics
; Combined effect
; Estuarine circulation
; estuarine convergence
; Hydrodynamic effect
; Particulate Matter
; Residual circulations
; Strong convergence
; Tidal asymmetry
; Estuaries
; circulation
; estuarine environment
; hydrodynamics
; tidal channel
; viscosity
英文摘要: Estuarine convergence (landward reduction of width and/or depth) is known to have the potential to significantly enhance estuarine circulation, a result theoretically derived under the assumption of constant eddy viscosity. Recent studies of longitudinally uniform energetic tidal channels indicate that tidal straining, a process driven by tidally varying eddy viscosity, is a major driver of estuarine circulation. The combined effect of estuarine convergence and tidal straining is investigated, for the first time, in this paper. The present idealized numerical study shows that estuarine convergence is reducing or even reversing tidal straining circulation in such a way that estuarine circulation can be weakened. This is a counterintuitive hydrodynamic effect of estuarine convergence, which may reduce (rather than increase) up-estuary particulate matter transport in estuaries and tidal inlets. Key Points It is a priori not clear if estuarine convergence enhances exchange flows Tidal straining is reversed by strong convergence Estuarine convergence tends to increase eddy viscosity during ebb ©2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84893176171&doi=10.1002%2f2013GL058494&partnerID=40&md5=f90ecb36a40ff76d17bb964921642516
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7684
Appears in Collections: 气候减缓与适应
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作者单位: Leibniz Institute for Baltic Sea Research Warnemünde, Rostock, Germany
Recommended Citation:
Burchard H.,Schulz E.,Schuttelaars H.M.. Impact of estuarine convergence on residual circulation in tidally energetic estuaries and inlets[J]. Geophysical Research Letters,2014-01-01,41(3).