Regional Frequency Analysis of extremes flows in Northern of Spain

• Published in: Ingeniería del agua
• Main Authors: Montes, J., Álvarez, M., Pertierra, L., Moralo, J., Baztán, J.
• Other Authors: Naturgy Energy Group, S.A.
• Format: Article in Journal/Newspaper
• Language: Spanish
• Published: Universitat Politècnica de València 2018
• Subjects: hist; geo; North Atlantic
• Online Access: https://doi.org/10.4995/ia.2018.8782; http://hdl.handle.net/10251/101246

SWORD http://ceh-flumen64.cedex.es/general/default.htm http://augasdegalicia.xunta.gal http://www.bizkaia.eus http://www.chcantabrico.es/index.php/es/ https://www.chminosil.es/es http://www.gipuzkoa.eus http://www.meteogalicia.gal http://www.navarra.es/home_es [EN] This paper presents a study of regional frequency analysis of peak flows in Cantabrian and North Atlantic basins of Spain, based on the index-flood procedure with estimated parameters by L-moments approach (Hosking and Wallis, 1997). Observed annual maximum flow series of 85 gauged catchment areas in natural regime with records from 15 to 72 years were analyzed. The discordancy and heterogeneity measures based on the L-moments suggest 9 statistical homogeneous regions in which the same frequency distribution function is shared except for a scale factor. The main contribution of the study is the distinction of the regions according to their pluvial or snow character and the model capacity to estimate extreme peak flows with greater robustness than other methodologies. Chiew, F., Siriwardena, L. 2005. Trend/Change detection software. USER GUIDE. CRC for Catchment Hydrology, Australia. Cunnane, C. 1988. Methods and merits of regional flood frequency analysis. Journal of Hydrology, 100, 269-290. https://doi.org/10.1016/0022-1694(88)90188-6 Dalrymple, T. 1960. Flood frequency analysis. USGS Water Supply Paper 1543-A. Fisher, R., Tippet, L. H. C. 1928. Limiting forms of the frequency distributions of the largest or smallest member of a sample. Proceedings of the Cambridge Philosophical Society, 24, 180-190. https://doi.org/10.1017/S0305004100015681 Gumbel, E. J. 1958. Statistics of extremes. Columbia University Press, New York, USA. Hosking, J. R. M. 1990. L-moments: Analysis and Estimation of Distributions using Linear Combinations of order Statistics. Journal of the Royal Statistical Society, Ser. B, 52(1), 105-124. Hosking, J. R. M., Wallis, J. R. 1997. Regional frequency analysis: an approach based on L-moments. Cambridge University ...