نوع مقاله : مقاله پژوهشی
دانشکده منابع طبیعی، دانشگاه صنعتی اصفهان
عنوان مقاله [English]
In hydrologic regional frequency analysis, information of one or more stations are generalized for a region. In this case, the variation of this information is assumed to have a defined coefficient called scale. In this study, scaling properties of 7-day low flow of 19 basins in Mazandaran province in northern Iran were investigated. Scaling implies the relationship between probabilistic features and the area of the basin. If this exponent (called scaling exponent) has a linear relationship with drainage area and does not include a significant relationship with probability weighted moments, low flow is called “simple scaling”. The study showed that the logarithm of the drainage area and the logarithm of the probability weighted moments of order 1 to 10 are linear and the scaling exponent did not have a significant relationship with probability weighted moments. Acordingly the 7-day low flows of Mazandaran province are simple scaling.