Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018WR022954 |
Exchange Processes Induced by Large Horizontal Coherent Structures in Floodplain Vegetated Channels | |
Truong, S. H.1,2; Uijttewaal, W. S. J.1; Stive, M. J. F.1 | |
2019-03-01 | |
发表期刊 | WATER RESOURCES RESEARCH |
ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2019 |
卷号 | 55期号:3页码:2014-2032 |
文章类型 | Article |
语种 | 英语 |
国家 | Netherlands; Vietnam |
英文摘要 | Mangrove forests along the Mekong delta estuaries are usually observed to degrade together with the increasing extension of fish farms. In this limited-width condition, the formation of coherent structures, their interactions with mangroves, the role of the width of the mangrove forest, and their effects on the exchange processes between the open channel and the adjacent floodplain are still not well examined. In order to obtain more insight, a unique laboratory experiment of a vegetated compound channel mimicking estuarine mangroves has been conducted. The results show that in a compound vegetated channel with a very gentle transverse slope, the vegetated shear layer dynamics resembled that associated with vegetation rather than that associated with a depth differential. Furthermore, the flow field under the effect of large horizontal coherent structures (LHCSs) shows a spatially and temporally cycloid motion with associated flow events, namely, sweep, ejection, stagnant, and reverse flows. It is also suggested that the coherent structures can have an influence on a broader area than the vegetation area into which the eddy structures can penetrate. In terms of the exchange processes, the momentum transfer and the intensity of transverse fluctuations induced by the LHCSs can be related to this phenomenon. Consequently, decreasing the mangrove width can significantly affect the pattern of the LHCSs, disturb the transverse exchange processes induced by these structures, and thereby changing the shear layer, creating unfavorable conditions for sedimentation inside forests and for river bank stability. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000464660000015 |
WOS关键词 | MANGROVE SQUEEZE ; FLOW ; TURBULENCE ; STRAIGHT ; HYDRODYNAMICS ; PREDICTION ; DRAG |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/181564 |
专题 | 资源环境科学 |
作者单位 | 1.Delft Univ Technol, Fac Civil Engn & Geosci, Hydraul Dept, Delft, Netherlands; 2.Thuy Loi Univ, Fac Civil Engn, Hydraul Dept, Hanoi, Vietnam |
推荐引用方式 GB/T 7714 | Truong, S. H.,Uijttewaal, W. S. J.,Stive, M. J. F.. Exchange Processes Induced by Large Horizontal Coherent Structures in Floodplain Vegetated Channels[J]. WATER RESOURCES RESEARCH,2019,55(3):2014-2032. |
APA | Truong, S. H.,Uijttewaal, W. S. J.,&Stive, M. J. F..(2019).Exchange Processes Induced by Large Horizontal Coherent Structures in Floodplain Vegetated Channels.WATER RESOURCES RESEARCH,55(3),2014-2032. |
MLA | Truong, S. H.,et al."Exchange Processes Induced by Large Horizontal Coherent Structures in Floodplain Vegetated Channels".WATER RESOURCES RESEARCH 55.3(2019):2014-2032. |
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