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DOI10.3390/w9020076
Assessment of Optional Sediment Transport Functions via the Complex Watershed Simulation Model SWAT
Yen, Haw1; Lu, Shenglan2; Feng, Qingyu3; Wang, Ruoyu4; Gao, Jungang1; Brady, Dawn Michelle5; Sharifi, Amirreza6; Ahn, Jungkyu7; Chen, Shien-Tsung8; Jeong, Jaehak1; White, Michael James9; Arnold, Jeffrey George9
发表日期2017-02-01
ISSN2073-4441
卷号9期号:2
英文摘要

The Soil and Water Assessment Tool 2012 (SWAT2012) offers four sediment routing methods as optional alternatives to the default simplified Bagnold method. Previous studies compared only one of these alternative sediment routing methods with the default method. The proposed study evaluated the impacts of all four alternative sediment transport methods on sediment predictions: the modified Bagnold equation, the Kodoatie equation, the Molinas and Wu equation, and the Yang equation. The Arroyo Colorado Watershed, Texas, USA, was first calibrated for daily flow. The sediment parameters were then calibrated to monthly sediment loads, using each of the four sediment routing equations. An automatic calibration toolIntegrated Parameter Estimation and Uncertainty Analysis Tool (IPEAT)was used to fit model parameters. The four sediment routing equations yielded substantially different sediment sources and sinks. The Yang equation performed best, followed by Kodoatie, Bagnold, and Molinas and Wu equations, according to greater model goodness-of-fit (represented by higher Nash-Sutcliffe Efficiency coefficient and percent bias closer to 0) as well as lower model uncertainty (represented by inclusion of observed data within 95% confidence interval). Since the default method (Bagnold) does not guarantee the best results, modelers should carefully evaluate the selection of alternative methods before conducting relevant studies or engineering projects.


英文关键词sediment transport;model calibration;SWAT;uncertainty analysis;IPEAT
语种英语
WOS记录号WOS:000395435800007
来源期刊WATER
来源机构美国环保署
文献类型期刊论文
条目标识符http://gcip.llas.ac.cn/handle/2XKMVOVA/61713
作者单位1.Texas A&M Univ, Blackland Res & Extens Ctr, 720 East Blackland Rd, Temple, TX 76502 USA;
2.Aarhus Univ, Dept Biosci, Vejlsovej 27, DK-8600 Silkeborg, Denmark;
3.Purdue Univ, Dept Agr & Biol Engn, Hovde Hall,610 Purdue Mall, W Lafayette, IN 47907 USA;
4.US EPA, Integrated Environm Modeling Branch, Raleigh, NC 27695 USA;
5.Aqua Aerob Syst Inc, 6306 N Alpine Rd, Loves Pk, IL 61111 USA;
6.Univ Maryland, Dept Environm Sci & Technol, College Pk, MD 20742 USA;
7.Incheon Natl Univ, Dept Civil & Environm Engn, 119 Acad Ro, Incheon 22012, South Korea;
8.Feng Chia Univ, Dept Water Resources Engn & Conservat, Taichung 40724, Taiwan;
9.USDA ARS, Grassland Soil & Water Res Lab, 808 East Blackland Rd, Temple, TX 76502 USA
推荐引用方式
GB/T 7714
Yen, Haw,Lu, Shenglan,Feng, Qingyu,et al. Assessment of Optional Sediment Transport Functions via the Complex Watershed Simulation Model SWAT[J]. 美国环保署,2017,9(2).
APA Yen, Haw.,Lu, Shenglan.,Feng, Qingyu.,Wang, Ruoyu.,Gao, Jungang.,...&Arnold, Jeffrey George.(2017).Assessment of Optional Sediment Transport Functions via the Complex Watershed Simulation Model SWAT.WATER,9(2).
MLA Yen, Haw,et al."Assessment of Optional Sediment Transport Functions via the Complex Watershed Simulation Model SWAT".WATER 9.2(2017).
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