Published in Scientific Papers. Series E. Land Reclamation, Earth Observation & Surveying, Environmental Engineering, Vol. XI
Written by Gabriela BIALI, Paula COJOCARU
This paper presents a study on the use of GIS technology in determining the leakage caused by water erosion in a river basin of 370 ha. The research presented in this paper is carried out in the Sulita hydrographic basin from Botosani County. The main objective is represented by the spatial analysis of the processes that take place in the hydrological system and of the physical-geographical factors that determine their variability. This GIS system developed under ArcGIS 9.2 can be considered a basic research in structuring a hydrological GIS and in creating an appropriate geospatial database. The approached method is based on the digital analysis of the terrain, determining the morphometric parameters and the hydrological parameters. Using the ArcGIS 9.2 software, the calculation of slopes and directions is done at the pixel level, in a 3x3 pixel window, on all 8 directions from the central pixel to the neighborhoods. The important part of the paper is the determination of the parameter called flow accumulation, which in the study of water erosion, that indicates the way in which the actual flow is carried out on the slopes.
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