Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2016WR019277 |
Examination of the seepage face boundary condition in subsurface and coupled surface/subsurface hydrological models | |
Scudeler, C.1,2,3; Paniconi, C.1; Pasetto, D.4; Putti, M.2 | |
2017-03-01 | |
发表期刊 | WATER RESOURCES RESEARCH
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ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2017 |
卷号 | 53期号:3 |
文章类型 | Article |
语种 | 英语 |
国家 | Canada; Italy; England; Switzerland |
英文摘要 | A seepage face is a nonlinear dynamic boundary that strongly affects pressure head distributions, water table fluctuations, and flow patterns. Its handling in hydrological models, especially under complex conditions such as heterogeneity and coupled surface/subsurface flow, has not been extensively studied. In this paper, we compare the treatment of the seepage face as a static (Dirichlet) versus dynamic boundary condition, we assess its resolution under conditions of layered heterogeneity, we examine its interaction with a catchment outlet boundary, and we investigate the effects of surface/subsurface exchanges on seepage faces forming at the land surface. The analyses are carried out with an integrated catchment hydrological model. Numerical simulations are performed for a synthetic rectangular sloping aquifer and for an experimental hillslope from the Landscape Evolution Observatory. The results show that the static boundary condition is not always an adequate stand-in for a dynamic seepage face boundary condition, especially under conditions of high rainfall, steep slope, or heterogeneity; that hillslopes with layered heterogeneity give rise to multiple seepage faces that can be highly dynamic; that seepage face and outlet boundaries can coexist in an integrated hydrological model and both play an important role; and that seepage faces at the land surface are not always controlled by subsurface flow. The paper also presents a generalized algorithm for resolving seepage face outflow that handles heterogeneity in a simple way, is applicable to unstructured grids, and is shown experimentally to be equivalent to the treatment of atmospheric boundary conditions in subsurface flow models. |
英文关键词 | seepage face boundary conditions integrated hydrological modeling surface subsurface interactions Richards' equation |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000400160500006 |
WOS关键词 | 1ST-ORDER EXCHANGE COEFFICIENT ; WATER-GROUNDWATER INTERACTIONS ; SATURATED FLOW PROBLEMS ; SURFACE-WATER ; CATCHMENT DYNAMICS ; NUMERICAL-SOLUTION ; LAYERED SLOPES ; RUNOFF ; SIMULATIONS ; GENERATION |
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/21149 |
专题 | 资源环境科学 |
作者单位 | 1.Univ Quebec, Inst Natl Rech Sci, Ctr Eau Terre Environm, Quebec City, PQ, Canada; 2.Univ Padua, Dept Math, Padua, Italy; 3.Risk Management Solut, Model Dev, London, England; 4.Ecole Polytech Fed Lausanne, Lab Ecohydrol, Lausanne, Switzerland |
推荐引用方式 GB/T 7714 | Scudeler, C.,Paniconi, C.,Pasetto, D.,et al. Examination of the seepage face boundary condition in subsurface and coupled surface/subsurface hydrological models[J]. WATER RESOURCES RESEARCH,2017,53(3). |
APA | Scudeler, C.,Paniconi, C.,Pasetto, D.,&Putti, M..(2017).Examination of the seepage face boundary condition in subsurface and coupled surface/subsurface hydrological models.WATER RESOURCES RESEARCH,53(3). |
MLA | Scudeler, C.,et al."Examination of the seepage face boundary condition in subsurface and coupled surface/subsurface hydrological models".WATER RESOURCES RESEARCH 53.3(2017). |
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