CONTRIBUTION OF HYDRODYNAMIC METHODS TO T HE STUDY OF A KARSTIC AQUIFER (BENI-MELLAL ATLAS, MOROCCO)

The karstic massif of Beni Mellal in the Upper calcareous Atlas (Moroc co) is essentially constituted by Liasic dolomitic limestones. It pres ents a particular karstic morphology. The massif ranges in elevation b etween 500 m and 2 400 m, feeds numerous springs, the most important o f which is Ain Asserdoune. All springs emerge at the level of a major coastal fault bringing the liasic plateau on the Cenozoic lands of the pied mont, The classified fluxes and the autocorrelation and spectral analysis for rainfall and discharge series show an inertial aquifer s ystem with an important storage along with a superficial karst working in the high water periods.