UTILISATION DE LA TÉLÉDÉTECTION ET DES SIG DANS LA RÉGIONALISATION HYDROLOGIQUE.

Hydrology is one of the various fields where the remote sensing and GIS are very useful for solving different practical problems. This paper presents an application of informations acquisitioned by remote sensing and of GIS techniques in regionalization of the annual peak discharges of catchments in Carpathian Curvature area (Romania). The multiple-regression procedure was the applied as regionalization method. The remote sensing and GIS has been used for obtain the variables of the regression models (physiographic characteristics of catchments): area, mean elevation, mean slope, index of form, mean annual precipitation, proportion of forest, and proportion of croplands. The two last variables were determined from the Eurasia Land Cover Database (EDC), with 1 km nominal spatial resolution, and based on 1 km AVHRR data spanning April 1992 through March 1993. We used the classification of the International Geosphere Biosphere Programme's (IGBP) containing 17 land cover classes. The obtained regression models can be used to estimate the annual peak discharges with different interval of recurrence in the study area, from catchments no-gauged or from catchments where the measured data have not a good quality. [ABSTRACT FROM AUTHOR]