| Autor: |
Szolgay, Ján, 1953- |
| Další autoři: |
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| Jazyk: |
angličtina |
| Předmět: |
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| Druh dokumentu: |
Non-fiction |
| ISSN: |
0042-790X |
| Abstrakt: |
Abstract: The discrete state space representation of the cascade of linear reservoirs model was used in this case study as the basis for a multilinear flood routing model. The time distribution scheme of model inputs was employed in the setup of the multilinear model and the travel-time parameter of the model was allowed to vary with discharge. The relationship between the flood wave-speed and the discharge for a reach of the Morava River between Moravský Svätý Ján and Záhorská Ves was studied. Five empirical models of that relation have been considered that would fit the data and would be consistent with the physical interpretation of the factors determining the relation. Empirical relations between the wave-speed and discharge were derived for the given river reach using engineering reasoning, linear and nonlinear regression and artificial neural networks. These relationships were used to model the variability of the time parameter in the discrete linear cascade flow routing model. The performance of the multilinear model was verified on ten flood waves. The modelling results showed that the inclusion of empirical information on the variability of the wave-speed with discharge enables satisfactory accuracy of the prediction of the flood propagation process without needing to calibrate the model on pairs of input-output hydrographs. The problem of choosing an appropriate wave-speed discharge relationship was briefly discussed. |
| Databáze: |
Katalog Knihovny AV ČR |
| Externí odkaz: |
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