Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019WR025448 |
An Empirical Reevaluation of Streamflow Recession Analysis at the Continental Scale | |
Tashie, Arik1; Pavelsky, Tamlin1; Band, Lawrence E.2,3 | |
2020 | |
发表期刊 | WATER RESOURCES RESEARCH |
ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2020 |
卷号 | 56期号:1 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Streamflow recession analysis is a widely used hydrologic tool that uses readily available discharge measurements to estimate otherwise unmeasurable watershed-scale properties, predict low flows, and parameterize many lumped hydrologic models. Traditional methods apply the simplifying assumptions of outflow from a Boussinesq aquifer, which predicts the slope of the recession curve relating streamflow to its derivative in log-log space to decrease from early-stage to late-stage recession. However, this prediction has not been validated in actual watersheds. Also, recent studies have shown that slopes of observed recession events are often much greater than traditional methods that predict with data point clouds. We analyze recession behavior of 1,027 streams from across the continental United States for periods of 10 to 118 years, identifying over 155,000 individual recession events. We find that the average slope of observed recession events is greater than that of the point cloud for all streams. Further, recession slopes of observed events decrease with time in only 10% of cases and instead increase with time in 74% of cases. We identify only nine watersheds where observed streamflow behavior often conforms to the predictions of traditional recession analysis, each of which is arid and flat with low permeability. Analysis of our extensive empirical results with a regionalization of catchment hydrologic characteristics indicates that heterogeneity of subsurface flow paths increases the nonlinearity and convexity of observed recession, likely as a function of watershed memory. The practical implications of our analysis are that streamflow is more stable during periods of extended drought than generally predicted. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000520132500042 |
WOS关键词 | BASE-FLOW RECESSION ; MODELS ; AQUIFERS |
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/280481 |
专题 | 资源环境科学 |
作者单位 | 1.Univ N Carolina, Dept Geol Sci, Chapel Hill, NC 27515 USA; 2.Univ Virginia, Dept Environm Sci, Clark Hall, Charlottesville, VA 22903 USA; 3.Univ Virginia, Dept Engn Syst & Environm, Charlottesville, VA USA |
推荐引用方式 GB/T 7714 | Tashie, Arik,Pavelsky, Tamlin,Band, Lawrence E.. An Empirical Reevaluation of Streamflow Recession Analysis at the Continental Scale[J]. WATER RESOURCES RESEARCH,2020,56(1). |
APA | Tashie, Arik,Pavelsky, Tamlin,&Band, Lawrence E..(2020).An Empirical Reevaluation of Streamflow Recession Analysis at the Continental Scale.WATER RESOURCES RESEARCH,56(1). |
MLA | Tashie, Arik,et al."An Empirical Reevaluation of Streamflow Recession Analysis at the Continental Scale".WATER RESOURCES RESEARCH 56.1(2020). |
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