CLASSICAL" AND "MODERN" IN THE REPRESENTATION AND HYDROGRAPHIC ANALYSIS PUBLISHEDSilvica Oncia, Loredana Copacean, Mihai Herbei
The present study has the main purpose representing and analyzing watershed established both by classical methods and modern methods, "automated", to highlight quantitative and qualitative differentiations reflected in the results. The case study presented in this paper is Bega river basin. The results obtained by the "classical" methods, represented by empirical formulas are compared with results obtained using ArcGIS software, the following parameters were determined: the perimeter, area, length, average altitude and average slope of the hydrographic basin. Analysis Bega river basin using GIS technique is based on Digital Elevation Model, which is obtained by extracting the altimetric information from topographic map. Without underestimating the value and importance of the classical methods used in hydrographic analysis, modern methods, namely the use of GIS, offers a number of advantages, the most important being: accuracy in representation and analysis, generating high-quality maps, the possibility to reuse the cartographic materials obtained in each stage and for other types of analysis, significantly reducing execution time and effort by the analyst. The results obtained by applying both types of methods do not show significant differences, which means that GIS methods, easier to apply, can partially or totally replace traditional methods on condition that Digital Elevation Model that underlies this type of analysis to be executed correctly and be in proper spatial resolution.
calculation, method, hydrographic, compared