ANALIZA VARIABILITĂŢII SPAŢIALE A UNOR INDICI DE APRECIERE A SECETELOR
ABSTRACT.-The analysis of the spatial variability of some estimation drought indicator. On the basis of the literature of speciality, we extract the most important indicators which characterize the pluviometric conditions: the Lang rain-factor, the pluviometric criterion of Hellman, the pluviometric index, the annual dryness index of „de Martonne” and the climograms of Peguy and Walter-Lieth. The anaysis of this indicators at the some meteorological stations (Campulung Moldovenesc, Piatra Neamt and Iasi) points out in evidence that the drying and the drought periods are most frequent in the SE of the Moldavian Plain (sometimes this frequency is annual) decreasing to the mountain region because of the general circulation of the air masses and of the moderation of the mountain region. At the same time the dryness degree and the risk of drought producing increase from the mountain regions to the plains. This is the special feature pointed out by every index which has been analysed.