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A sediment graph model based on SCS-CN method
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DOI：10.1016/j.jhydrol.2007.11.004.png)
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This paper proposes new conceptual sediment graph models based on coupling of popular and extensively used methods, viz., Nash model based instantaneous unit sediment graph (IUSG), soil conservation service curve number (SCS-CN) method, and Power taw. These models vary in their complexity and this paper tests their performance using data of the Nagwan watershed (area = 92.46 km(2)) (India). The sensitivity of total sediment yield and peak sediment flow rate computations to model parameterisation is analysed. The exponent of the Power law, beta, is more sensitive than other model parameters. The models are found to have substantial potential for computing sediment graphs (temporal sediment flow rate distribution) as well as total sediment yield. (c) 2007 Elsevier B.V. All rights reserved.
Keyword:
instantaneous unit sediment graph (IUSG)
soil conservation service curve number (SCS-CN)
sediment graph
sediment yield
peak sediment flow
catchment routing
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IF:
6.3
论文数:
2.4W
被引数:
9.8W
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