APPROCHE REGIONALE POUR L’ESTIMATION DES PLUIES MAXIMALES JOURNALIERES DU NORD DE L’ALGERIE
Journal Title: Larhyss Journal - Year 2016, Vol 28, Issue 28
Abstract
Maximum rain quantiles estimate has always been of great importance to hydrologists and water resource managers. This information is essential for planning emergency situations related to hazardous weather conditions and the design of water supply engineering structures. In many instances, it is vital to estimate the extreme values relevant to the few frequencies for sites where there are few measures or even almost non-existent. The regionalization approach is the most used in such cases. The regionalization procedure, based on the L-moments coupled with the rain index method has been both applied to rainfall data of two hundred and thirty (230) stations spread at random across northern Algeria and is the goal of this work. L-moments method confirmed the homogeneity of the twelve (12) regions that make up the study area. Rain indexes, combined with the regional growth curves developed in this study may logically estimate maximum rains quantiles at the stations by using the mean maximum rain in the observations series. The study provides an estimate of the regional characteristics of daily maximum rainfall that may be useful in studies of floods in the engineering design of water supply engineering structures.
Authors and Affiliations
MEDDI M. | École Nationale Supérieure de l’Hydraulique de Blida, le laboratoire LGEE, Algérie, TOUMI S. | École Nationale Supérieure de l’Hydraulique de Blida, le laboratoire LGEE, Algérie
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