Geomorphological assessment using geoinformatics applications of the sloping system of al-Ashaali drainage basin at Iraqi Southern desert

Abstract EN

The research deals with the study of the slope systems of the Ashaali drainage basin in the southern Iraqi desert, using the geoinformatics’ technique, digital elevation models (DEM), satellite images of the Landsat ETM+8, in addition to the topographic, geological, and hydrological maps.

the slope systems of the study area are studied through 4 topographic sectors (longitudinal and transverse) that represent the stages of geomorphological development of the drainage basin following Davis erosion cycle, as well as by knowing the regression categories according to the young classification, the direction of the slopes, the sloping parts and the types of slopes (straight, convex, concave).

the results show an increase in the area of the slope category 5-10, which reached 25.499%, as well as an increase in the percentage of the direction of the southwestern slopes, which has the highest percentage of 16.277%.

as for the sloping parts, the maturity area recorded the highest percentage, estimated at 251 slope parts.

in addition, the results show that there is variation in the types of slopes, and the central basin area (maturity stage) of the geomorphological cycle representing all types.