✦ LIBER ✦

Application of the Kalman filter to the Nash model

✍ Scribed by Y. H. Lee; V. P. Singh

Publisher: John Wiley and Sons
Year: 1998
Tongue: English
Weight: 202 KB
Volume: 12
Category: Article
ISSN: 0885-6087
DOI: 10.1002/(sici)1099-1085(19980430)12:5<755::aid-hyp623>3.0.co;2-#

No coin nor oath required. For personal study only.

✦ Synopsis

The Nash model was used for application of the Kalman ®lter. The state vector of the rainfall±runo system was constituted by the IUH (instantaneous unit hydrograph) estimated by the Nash model and the runo estimated by the Nash model using the Kalman ®lter. The initial values of the state vector were assumed as the average of 10% of the IUH peak values and the initial runo estimated from the average IUH. The Nash model using the Kalman ®lter with a recursive algorithm accurately predicted runo from a basin in Korea. The ®lter allowed the IUH to vary in time, increased the accuracy of the Nash model and reduced physical uncertainty of the rainfall±runo process in the river basin.

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