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Input-output model for runoff-sediment yield processes |
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| Authors: | TC Sharma WGS Hines WT Dickinson |
| Institution: | a Department of Agricultural Engineering, Pant College of Technology, G.B. Pant University of Agriculture and Technology, Pantnagar, Nainital, Uttar Pradesh, India b Department of Mathematics and Statistics, University of Guelph, Guelph, Ont. N1G 2W1, Canada c School of Engineering, University of Guelph, Guelph, Ont. N1G 2W1, Canada |
| Abstract: | Runoff (log-transformed) and sediment yield (log-transformed) sequences on a monthly or daily basis can be regarded as input and output for the watershed fluvial system. These sequences are nonstationary in general in different hydrological environments. Frequency and time domain analyses have shown that a parsimonious model can be built directly in terms of these nonstationary input-output sequences on a monthly and daily basis. A first-order dynamic model was found adequate to model the monthly runoff-sediment yield process; a second-order model adequately modeled the daily runoff-sediment yield process. The noise component in both cases possessed the characteristics of a white-noise sequence. |
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