Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017WR020871 |
Nonlinear Filtering Effects of Reservoirs on Flood Frequency Curves at the Regional Scale | |
Wang, Wei1,2,3; Li, Hong-Yi3,4,5; Leung, L. Ruby3; Yigzaw, Wondmagegn4,5; Zhao, Jianshi6; Lu, Hui1,2,7; Deng, Zhiqun3; Demisie, Yonas8; Bloeschl, Guenter9 | |
2017-10-01 | |
发表期刊 | WATER RESOURCES RESEARCH |
ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2017 |
卷号 | 53期号:10 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA; Austria |
英文摘要 | Reservoir operations may alter the characteristics of Flood Frequency Curve (FFC) and challenge the basic assumption of stationarity used in flood frequency analysis. This paper presents a combined data-modeling analysis of reservoir as a nonlinear filter of runoff routing that alters the FFCs. A dimensionless Reservoir Impact Index (RII), defined as the total upstream reservoir storage capacity normalized by the annual streamflow volume, is used to quantify reservoir regulation effects. Analyses are performed for 388 river stations in the contiguous U.S. using the first two moments of the FFC, mean annual maximum flood (MAF) and coefficient of variations (CV), calculated for the pre and post-dam periods. It is found that MAF generally decreases with increasing RII but stabilizes when RII exceeds a threshold value, and CV increases with RII until a threshold value beyond which CV decreases with RII. Hence depending on the magnitude of RII, reservoir regulation acts as a filter to increase or reduce the nonlinearity of the natural runoff routing process and alters flood characteristics. The nonlinear relationships of MAF and CV with RII can be captured by three reservoir models with different levels of complexity, suggesting that they emerge from the basic flood control function of reservoirs. However, the threshold RII values in the nonlinear relationships depend on the more detailed reservoir operations and objectives that can only be captured by the more complex reservoir models. Our conceptual model may help improve flood-risk assessment and mitigation in regulated river systems at the regional scale. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000418736000009 |
WOS关键词 | CLIMATE-CHANGE ; ANNUAL MAXIMUM ; WATER-BALANCE ; REGIME ; SIMILARITY ; SCENARIOS ; EQUALITY ; IMPACTS |
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/21382 |
专题 | 资源环境科学 |
作者单位 | 1.Tsinghua Univ, Minist Educ, Key Lab Earth Syst Modeling, Beijing, Peoples R China; 2.Tsinghua Univ, Dept Earth Syst Sci, Beijing, Peoples R China; 3.Pacific Northwest Natl Lab, Richland, WA 99354 USA; 4.Montana State Univ, Dept Land Resources & Environm Sci, Bozeman, MT 59717 USA; 5.Montana State Univ, Inst Ecosyst, Bozeman, MT 59717 USA; 6.Tsinghua Univ, Dept Hydraul Engn, State Key Lab Hydrosci & Engn, Beijing, Peoples R China; 7.Joint Ctr Global Change Studies, Beijing, Peoples R China; 8.Washington State Univ, Dept Civil & Environm Engn, Pullman, WA 99164 USA; 9.Vienna Univ Technol, Inst Hydraul Engn & Water Resources Management, Vienna, Austria |
推荐引用方式 GB/T 7714 | Wang, Wei,Li, Hong-Yi,Leung, L. Ruby,et al. Nonlinear Filtering Effects of Reservoirs on Flood Frequency Curves at the Regional Scale[J]. WATER RESOURCES RESEARCH,2017,53(10). |
APA | Wang, Wei.,Li, Hong-Yi.,Leung, L. Ruby.,Yigzaw, Wondmagegn.,Zhao, Jianshi.,...&Bloeschl, Guenter.(2017).Nonlinear Filtering Effects of Reservoirs on Flood Frequency Curves at the Regional Scale.WATER RESOURCES RESEARCH,53(10). |
MLA | Wang, Wei,et al."Nonlinear Filtering Effects of Reservoirs on Flood Frequency Curves at the Regional Scale".WATER RESOURCES RESEARCH 53.10(2017). |
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