Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018WR022663 |
Hyporheic Exchange Driven by Three-Dimensional Sandy Bed Forms: Sensitivity to and Prediction from Bed Form Geometry | |
Chen, Xiaobing1,2; Cardenas, M. Bayani3; Chen, Li1,4 | |
2018-06-01 | |
发表期刊 | WATER RESOURCES RESEARCH |
ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2018 |
卷号 | 54期号:6页码:4131-4149 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
英文摘要 | Bed form-driven hyporheic exchange is vital to biogeochemical processes occurring within aquatic sediment. The integrated effects of hyporheic processes in a bed form ultimately impact watershed-scale water quality. However, much of what is understood regarding bed hyporheic exchange is based on idealized two-dimensional bed forms despite the prevalence of potentially complex three-dimensional (3-D) bed forms in sandy riverbeds. We thus examined the impact of bed form three-dimensionality on hyporheic exchange. Bed form three-dimensionality was represented by two groups of geometric parameters: (1) crest planform curvature and (2) transverse and longitudinal wavelength and amplitude. A wide variety of synthetic bed forms was generated based on the geometric parameters. Then, surface flow over and hyporheic flow through each bed form was calculated using a 3-D multiphysics computational fluid dynamics model implemented across a range of Reynolds Number. We found that hyporheic exchange is sensitive to both types of parameters that determine the bed form three-dimensionality. Hyporheic exchange is dominated however by the three-dimensionality caused by out-of-phase superimposed sinusoidal surfaces. The results of the complex flow models were synthesized into simple equations for predicting hyporheic flux and bulk residence time based on bed form longitudinal and transverse wavelengths, bed form height, and Reynolds Number. |
英文关键词 | hyporheic exchange bed form three-dimensional dune hyporheic zone river |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000440309900020 |
WOS关键词 | MISSISSIPPI RIVER NETWORK ; CONVECTIVE-TRANSPORT ; BEDFORM INTERACTIONS ; NONSORBING SOLUTES ; DUNES ; FLOW ; GROUNDWATER ; SEDIMENT ; ZONE ; TOPOGRAPHY |
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/21485 |
专题 | 资源环境科学 |
作者单位 | 1.Hohai Univ, State Key Lab Hydrol Water Resources & Hydraul En, Nanjing, Jiangsu, Peoples R China; 2.Hohai Univ, Coll Water Conservancy & Hydropower Engn, Nanjing, Jiangsu, Peoples R China; 3.Univ Texas Austin, Dept Geol Sci, Austin, TX 78712 USA; 4.Desert Res Inst, Div Hydrol Sci, Las Vegas, NV USA |
推荐引用方式 GB/T 7714 | Chen, Xiaobing,Cardenas, M. Bayani,Chen, Li. Hyporheic Exchange Driven by Three-Dimensional Sandy Bed Forms: Sensitivity to and Prediction from Bed Form Geometry[J]. WATER RESOURCES RESEARCH,2018,54(6):4131-4149. |
APA | Chen, Xiaobing,Cardenas, M. Bayani,&Chen, Li.(2018).Hyporheic Exchange Driven by Three-Dimensional Sandy Bed Forms: Sensitivity to and Prediction from Bed Form Geometry.WATER RESOURCES RESEARCH,54(6),4131-4149. |
MLA | Chen, Xiaobing,et al."Hyporheic Exchange Driven by Three-Dimensional Sandy Bed Forms: Sensitivity to and Prediction from Bed Form Geometry".WATER RESOURCES RESEARCH 54.6(2018):4131-4149. |
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