Análisis regional de frecuencia de caudales punta en la vertiente cantábrica y noratlántica de la Penísula Ibérica
- Montes Marroyo, Javier
- Jerónimo Puertas Co-director
- Manuel Álvarez Enjo Co-director
- María Bermúdez Pita Co-director
Defence university: Universidade da Coruña
Fecha de defensa: 02 July 2020
- Francisco Díaz-Fierros Viqueira Chair
- Luis Pena Mosquera Secretary
- M. Sánchez-Juny Committee member
Type: Thesis
Abstract
In this Thesis, a regional frequency model of peak flow has been developed for the cantabrian and noratlantic watersheds of the Iberian Peninsula, complemented by a temporary extension of the annual maximum instantaneous flow series and a hydrological contrast of the results obtained. Such a model is supported by a regional delineation procedure based on the sequential application of principal component analysis, canonical correlation and clustering techniques, identifying 12 hydrologically distinguishable regions to which the index-flood method has been applied with its parameters estimated by Lmoments. Uncertainty of estimated quantiles has been quantified by Monte Carlo simulations taking into account the degree of regional heterogeneity identified by incorporating spatial correlation into analyzes. In 9 of the 12 regions, there has been a clear reduction of the uncertainties derived from the regional frequency analysis compared to those obtained from the classic local approach. The inferred relationships between the estimated statistical results and the physical characteristics of the basins have shown an appreciable hydrological consistency, reflecting the important phenomenological differences that exist between floods generated by purely rain processes and those originated under snow influence.