Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019WR024989 |
Floodplain Land Cover and Flow Hydrodynamic Control of Overbank Sedimentation in Compound Channel Flows | |
Juez, Carmelo1,2,3; Schaerer, C.1; Jenny, H.1; Schleiss, A. J.1; Franca, M. J.4,5 | |
2019-11-14 | |
发表期刊 | WATER RESOURCES RESEARCH
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ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2019 |
文章类型 | Article;Early Access |
语种 | 英语 |
国家 | Switzerland; Spain; Netherlands |
英文摘要 | Overbank sedimentation is predominantly due to fine sediments transported under suspension that become trapped and settle in floodplains when high-flow conditions occur in rivers. In a compound channel, the processes of exchanging water and fine sediments between the main channel and floodplains regulate the geomorphological evolution and are crucial for the maintenance of the ecosystem functions of the floodplains. These hydrodynamic and morphodynamic processes depend on variables such as the flow-depth ratio between the water depth in the main channel and the water depth in the floodplain, the width ratio between the width of the main channel and the width of the floodplain, and the floodplain land cover characterized by the type of roughness. This paper examines, by means of laboratory experiments, how these variables are interlinked and how the deposition of sediments in the compound channel is jointly determined by them. The combination of these compound channel characteristics modulates the production of vertically axised large turbulent vortical structures in the mixing interface. Such vortical structures determine the water mass exchange between the main channel and the floodplain, conditioning in turn the transport of sediment particles conveyed in the water, and, therefore, the resulting overbank sedimentation. The existence and pattern of sedimentation are conditioned by both the hydrodynamic variables (the flow-depth ratio and the width ratio) and the floodplain land cover simulated in terms of smooth walls, meadow-type roughness, sparse-wood-type roughness, and dense-wood-type roughness. |
英文关键词 | compound channel floodplain sedimentation floodplain vegetation fine sediments suspended sediment transport |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000496703600001 |
WOS关键词 | COHERENT STRUCTURES ; MIXING LAYER ; SURFACE ; TRANSPORT ; PATTERNS ; RIVER ; ROUGHNESS ; STRAIGHT |
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/223895 |
专题 | 资源环境科学 |
作者单位 | 1.Ecole Polytech Fed Lausanne, LCH, Lausanne, Switzerland; 2.UPM, ETSIDI, Madrid, Spain; 3.CSIC, IPE, Zaragoza, Spain; 4.IHE Delft Inst Water Educ, Water Sci & Engn Dept, Delft, Netherlands; 5.Delft Univ Technol, Dept Hydraul Engn, Delft, Netherlands |
推荐引用方式 GB/T 7714 | Juez, Carmelo,Schaerer, C.,Jenny, H.,et al. Floodplain Land Cover and Flow Hydrodynamic Control of Overbank Sedimentation in Compound Channel Flows[J]. WATER RESOURCES RESEARCH,2019. |
APA | Juez, Carmelo,Schaerer, C.,Jenny, H.,Schleiss, A. J.,&Franca, M. J..(2019).Floodplain Land Cover and Flow Hydrodynamic Control of Overbank Sedimentation in Compound Channel Flows.WATER RESOURCES RESEARCH. |
MLA | Juez, Carmelo,et al."Floodplain Land Cover and Flow Hydrodynamic Control of Overbank Sedimentation in Compound Channel Flows".WATER RESOURCES RESEARCH (2019). |
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