Special issue: Barriers to Sustainable Management of Water Quantity and Quality Introduction of block-wise use of TOPMODEL and Muskingum-Cunge method for the hydro- environmental simulation of a large ungauged basin
نویسندگان
چکیده
For the sustainable management of water quantity and quality, a hydrological model that can simulate the hydro-environmental dynamics of river basins at arbitrary locations is valuable. There are several streamflow simulation models suitable for such a purpose. Yet the lack of data commonly poses a serious problem for their application. This is a serious problem encountered for the sustainable management of water resources at a basin scale. This paper describes a combination of TOPMODEL with the Muskingum-Cunge flow routing method to overcome the problem at least partially. The resultant block-wise version of TOPMODEL is used to simulate daily flows in the data-rich 3570 km Fuji-kawa basin, central Honshu, Japan and in the data-poor 20 750 km northern part of Minjiang basin above Dujiangyan, Sichuan Province, China. The results demonstrate the potential use of the model for hydro-environmental simulation in a large data-poor basin. Utilisation conjointe de TOPMODEL et de la méthode de Muskingum-Cunge pour la simulation d'un grand bassin non-jaugé Résumé: Un modèle hydrologique capable de simuler n'importe où la dynamique hydrologique et environnementale d'un bassin versant est très utile pour une gestion durable de la qualité et de la quantité. Il existe pour ce faire différents modèles de simulation mais le manque de données pose habituellement de sérieux problèmes à leur application. C'est là un problème délicat, souvent rencontré dans la gestion durable des ressources en eau à l'échelle du bassin. Cet article décrit une combinaison de TOPMODEL et du modèle de routage Muskingum-Cunge qui permet de surmonter, au moins partiellement, ce problème. Cette nouvelle version de TOPMODEL a été utiHsée pour simuler les débits journaliers d'un bassin bien documenté de 3570 km au Japon (Fuji-kawa, Honshu) et d'un bassin médiocrement documenté de 20 750 km en Chine (Minjiang, Sichuan). Les résultats illustrent les utilisations possibles du modèle pour la simulation hydrologique de vastes bassins peu documentés.
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