Résumé

The Algeria of the North is a Mediterranean country is characterized in arid and semi-arid climates. Surface water is a factor limiting the economic development of the country. Precipitation are a main factor of water courses feeding, have a great interest on the variability of flows at all scales of time. This study aims to show the impact of climate variability on water resources in the basin of Seybouse. For illustrated this phenomenon and gives an idea of its impact, several methods have been used. Reduced centered variable (index of Nicholson), shows a succession of two phases, a rainy phase that occurs between the beginning of the 1940 and the end of the 1970, another deficit phase, which would be held in the early 1980. To better understand the contribution of annual rainfall in the reduction of flows, we applied to the time series of this scale the following statistical tests: statistics U of Buishand, Pettitt test, the Lee Heghinian Bayesian method and procedure of segmentation of Hubert. We concluded that breaks obtained by different methods lie mostly between 1980 and 1990. Resulting that rain falling after the breakdown is between 15% and 20% and there is that this decline has caused a consequence on the flows of major rivers (Oued Cherf, Oued Bouhamdane).
KeyWords: Rain Fall, Statistical Methods, Seybouse.

Information

Item Type:	Conference
Divisions:	» Laboratoire de Gestion, Maintenance et Réhabilitation Des Equipements et des Infrastructures Urbaines » Faculté des Sciences et de la Technologie
ePrint ID:	356
Date Deposited:	2015-05-24
Further Information:	Google Scholar
URI:	https://www.univ-soukahras.dz/fr/publication/article/356

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