تحليل الخصائص المورفومترية والتضاريسية ومدلالوتها الهيدرولوجية لحوض وادي ترج باستخدام معطيات نظم المعلومات الجغرافية

Abstract EN

This study aimed to build a database of the topographic and morphometric characteristics of the Tarj Valley and its partial basins,from the data of the DEM digital elevation model, with an accuracy of 12.5 meters, using the GIS program, to extract the topographic and morphometric variables, and to understand their hydrological implications, the study also used geographic information systems to produce and monitor geology and topography maps and derive climatic maps for the study area.

he results of the study revealed that the Tarj valley basin extends for a length of about 122.5 km, and an area of 3,922.05 km2, as the morphological characteristics were affected by the geological structure and structural composition, which in turn led to the elongation of the basin of (0.58) and a decrease in its rotation rate, indicating that its hydrological significance was delayed.

the arrival of the surface runoff and then the decrease in its volume to the main stream.

the study also relied on the Strahler method in determining the hierarchical arrangement of the waterways of the network, as it reached the sixth rank at the mouth, as for the terrain characteristics, the basin is characterized by severe slopes in the upper part, and then begins to gradually decline until the downstream area.