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    STUDIA GEOGRAPHIA - Issue no. 2 / 2010  
         
  Article:   THE DEGREE OF FINISHING OF THE DRAINAGE BASINS OF THE TRANSYLVANIAN DEPRESSION .

Authors:  GH. ROŞIAN, R. RUSU. 		 
       
         
  Abstract:  The Degree of Finishing of the Drainage Basins of the Transylvanian Depression. One of the possibilities to establish the tendency of evolution of a territory from a hydrographical point of view is the knowledge of the degree or rate of finishing of the drainage basins. This indicator, closely connected to the law of the number of streams, provides information about the stage of evolution of the drainage basins. In order to calculate this indicator, we selected 35 drainage basins of different orders in the Transylvanian Depression. Most of them have a value of the indicator below 1. This fact indicates a hydrographic evolution based on the increase of the number of first order segments in Horton-Strahler system, to reach values equal or higher than 1, specific for the drainage basins in a more advanced stage of evolution. The occurrence of new first order river segments within the drainage basins has effects both at the level of the already existing riverbeds, which perform the transit of alluvia, and at the level of slopes, the common place of formation for gullies and ravines.

Keywords: drainage network, confluence ratio, stream order, evolution. 

  
         
     
         
         
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