Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017WR021109 |
Flow Resistance Interactions on Hillslopes With Heterogeneous Attributes: Effects on Runoff Hydrograph Characteristics | |
Papanicolaou, Athanasios N.1; Abban, Benjamin K. B.1; Dermisis, Dimitrios C.2; Giannopoulos, Christos P.1; Flanagan, Dennis C.3; Frankenberger, James R.3; Wacha, Kenneth M.4 | |
2018 | |
发表期刊 | WATER RESOURCES RESEARCH
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ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2018 |
卷号 | 54期号:1页码:359-380 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | An improved modeling framework for capturing the effects of space and time-variant resistance to overland flow is developed for intensively managed landscapes. The framework builds on the WEPP model but it removes the limitations of the "equivalent" plane and time-invariant roughness assumption. The enhanced model therefore accounts for spatiotemporal changes in flow resistance along a hillslope due to changes in roughness, in profile curvature, and downslope variability. The model is used to quantify the degree of influence-from individual soil grains to aggregates, "isolated roughness elements," and vegetation-on overland flow characteristics under different storm magnitudes, downslope gradients, and profile curvatures. It was found that the net effects of land use change from vegetation to a bare surface resulted in hydrograph peaks that were up to 133% larger. Changes in hillslope profile curvature instead resulted in peak runoff rate changes that were only up to 16%. The stream power concept is utilized to develop a taxonomy that relates the influence of grains, isolated roughness elements, and vegetation, on overland flow under different storm magnitudes and hillslope gradients. Critical storm magnitudes and hillslope gradients were found beyond which the effects of these landscape attributes on the peak stream power were negligible. The results also highlight weaknesses of the space/time-invariant flow resistance assumption and demonstrate that assumptions on landscape terrain characteristics exert a strong control both on the shape and magnitude of hydrographs, with deviations reaching 65% in the peak runoff when space/time-variant resistance effects are ignored in some cases. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000428474000021 |
WOS关键词 | OVERLAND-FLOW ; KINEMATIC WAVE ; FRICTIONAL RESISTANCE ; SURFACE-ROUGHNESS ; SOIL-EROSION ; OPEN-CHANNEL ; MODEL ; LENGTH ; SIMULATION ; IMPACT |
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/21454 |
专题 | 资源环境科学 |
作者单位 | 1.Univ Tennessee, Dept Civil & Environm Engn, Knoxville, TN 37996 USA; 2.McNeese State Univ, Dept Chem Civil & Mech Engn, Coll Engn, Lake Charles, LA 70605 USA; 3.USDA ARS, Natl Soil Eros Res Lab, W Lafayette, IN USA; 4.USDA, Natl Lab Agr & Environm, Ames, IA USA |
推荐引用方式 GB/T 7714 | Papanicolaou, Athanasios N.,Abban, Benjamin K. B.,Dermisis, Dimitrios C.,et al. Flow Resistance Interactions on Hillslopes With Heterogeneous Attributes: Effects on Runoff Hydrograph Characteristics[J]. WATER RESOURCES RESEARCH,2018,54(1):359-380. |
APA | Papanicolaou, Athanasios N..,Abban, Benjamin K. B..,Dermisis, Dimitrios C..,Giannopoulos, Christos P..,Flanagan, Dennis C..,...&Wacha, Kenneth M..(2018).Flow Resistance Interactions on Hillslopes With Heterogeneous Attributes: Effects on Runoff Hydrograph Characteristics.WATER RESOURCES RESEARCH,54(1),359-380. |
MLA | Papanicolaou, Athanasios N.,et al."Flow Resistance Interactions on Hillslopes With Heterogeneous Attributes: Effects on Runoff Hydrograph Characteristics".WATER RESOURCES RESEARCH 54.1(2018):359-380. |
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