Prediction of sediment yield by coupling Kalman filter with instantaneous unit sediment graph
✍ Scribed by Y. H. Lee; V. P. Singh
- Publisher
- John Wiley and Sons
- Year
- 1999
- Tongue
- English
- Weight
- 156 KB
- Volume
- 13
- Category
- Article
- ISSN
- 0885-6087
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✦ Synopsis
An instantaneous unit sediment graph (IUSG) model in conjunction with Kalman ®lter was investigated for prediction of sediment yield from an upland watershed in Northwestern Mississippi. The state vector of the watershed sediment yield system was constituted by the IUSG and then the sediment yield was estimated by the IUSG model using Kalman ®lter. The initial values of the state vector were assumed as the average of the IUSG values and the initial sediment yield estimated from the average IUSG. The IUSG model using Kalman ®lter with a recursive algorithm accurately predicted sediment yield from watershed W-5, Mississippi. The ®lter allowed the IUSG to vary in time, increased the accuracy of the IUSG model, and reduced physical uncertainty of the sediment yield process in the watershed.