Criterios gasto prioridad y volumen prioridad para la estimación de hidrogramas de avenidas mediante cópulas
[EN] Copula-based hydrological estimation provides a realistic framework to represent dependence between extreme variables. This study presents an improved methodology for estimating flood hydrographs characterized by peak discharge and accumulated volume, using the Peak Flow Priority (QP) and Volum...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2026 |
| País: | España |
| Institución: | Universitat Politècnica de València (UPV) |
| Repositorio: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
| Idioma: | español |
| OAI Identifier: | oai:dnet:riunet______::8a0c4c4a1a4f779122d9f5cfbad5e4e9 |
| Acceso en línea: | https://riunet.upv.es/handle/10251/235106 |
| Access Level: | acceso abierto |
| Palabra clave: | Copula Joint return period Bivariate distribution function Design hydrographs Base time Cópulas Periodo de retorno conjunto Función de distribución bivariada Hidrogramas de avenidas |
| Sumario: | [EN] Copula-based hydrological estimation provides a realistic framework to represent dependence between extreme variables. This study presents an improved methodology for estimating flood hydrographs characterized by peak discharge and accumulated volume, using the Peak Flow Priority (QP) and Volume Priority (VP) criteria. Empirical marginal distributions, obtained with the rank-based method, were used to build Archimedean copulas (Gumbel Hougaard, Frank, and Clayton) to describe the joint dependence structure. Parametric distributions (Gumbel, Weibull, and Gamma, and their combinations) were applied only to compute the joint probability isolines. The duration analysis identified an optimal base duration of 18 days based on the 5% volume variation criterion. The Gumbel Hougaard (for QP) and Frank (for VP) copulas achieved the best fits according to the Kolmogorov Smirnov and Anderson Darling tests. Applied to the La Angostura dam (Sonora, Mexico), the routed hydrographs produced maximum levels of about 833 m a.s.l., confirming the reservoir's attenuation capacity and the consistency of the bivariate model. |
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