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DOI | 10.1029/2019WR025138 |
Copula Theory as a Generalized Framework for Flow-Duration Curve Based Streamflow Estimates in Ungaged and Partially Gaged Catchments | |
Worland, Scott. C.1,2; Steinschneider, Scott2; Farmer, William3; Asquith, William4; Knight, Rodney1 | |
2019-11-19 | |
发表期刊 | WATER RESOURCES RESEARCH |
ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2019 |
文章类型 | Article;Early Access |
语种 | 英语 |
国家 | USA |
英文摘要 | Flow-duration curve (FDC) based streamflow estimation methods involve estimating an FDC at an ungaged or partially gaged location and using the time series of nonexceedance probabilities estimated from donor streamgage sites to generate estimates of streamflow. We develop a mathematical framework to illustrate the connection between copulas and prior FDC-based approaches. The performance of copula methods is compared to several other streamflow estimation methods using a decade of daily streamflow data from 74 sites located within two river basins in the southeast United States with different climate characteristics and physiographic properties. We show that copula approaches: (1) outperform other methods in the limiting case of perfect information with regard to the rank-based correlation structure and FDCs across the gaging network; (2) provide a hedge against poor performance when donor information becomes sparser and less informative; (3) outperform other methods when used for partially gaged sites with several years of available data; and (4) remain a competitive albeit nondominating method for ungaged sites and partially gaged sites with limited data when realistic error is introduced in the estimation of FDCs and correlations across the gaging network. |
英文关键词 | copulas flow-duration curves streamflow estimation QPPQ regionalization PUB |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000497076800001 |
WOS关键词 | UNGAUGED BASINS ; TIME-SERIES ; PREDICTION ; MODEL ; REGIONALIZATION ; UNCERTAINTY ; INFERENCE |
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/223907 |
专题 | 资源环境科学 |
作者单位 | 1.US Geol Survey, Lower Mississippi Gulf Water Sci Ctr, Nashville, TN 37211 USA; 2.Cornell Univ, Dept Biol & Environm Engn, Ithaca, NY 14850 USA; 3.US Geol Survey, Box 25046, Denver, CO 80225 USA; 4.US Geol Survey, Texas Water Sci Ctr, Lubbock, TX USA |
推荐引用方式 GB/T 7714 | Worland, Scott. C.,Steinschneider, Scott,Farmer, William,et al. Copula Theory as a Generalized Framework for Flow-Duration Curve Based Streamflow Estimates in Ungaged and Partially Gaged Catchments[J]. WATER RESOURCES RESEARCH,2019. |
APA | Worland, Scott. C.,Steinschneider, Scott,Farmer, William,Asquith, William,&Knight, Rodney.(2019).Copula Theory as a Generalized Framework for Flow-Duration Curve Based Streamflow Estimates in Ungaged and Partially Gaged Catchments.WATER RESOURCES RESEARCH. |
MLA | Worland, Scott. C.,et al."Copula Theory as a Generalized Framework for Flow-Duration Curve Based Streamflow Estimates in Ungaged and Partially Gaged Catchments".WATER RESOURCES RESEARCH (2019). |
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