Open Access

ARTICLE

GIS analysis of hypsometry and basin asymmetry factor in Htab river basin and tectonic implications (Central Atlas, Tunisia)

Ali Chaieb, Noamen Rebai

University of Tunis El Manar, National Engineering School of Tunis, LR14ES03 Geotechnical Engineering and Georisk Laboratory, B.P 37 le Belveldère 1002, Tunis, Tunisia

Revue Internationale de Géomatique 2019, 29(3), 287-296. https://doi.org/10.3166/rig.2019.00082

Abstract

The geomorphology of the Htab river watershed is mainly guided by the action of the E-W Kasserine fault. This activity influenced the installed hydrographic system. To see the impact of neotectonic on the Htab river watershed, four morphometric indices were applied: the elongation ratio, the hypsometric curve, the hypsometric integral, and the asymmetry factor. The processing and calculation of these indices were based on global DEMs (Digital Elevation Models). The result obtained shows an important link between the activity of the Kasserine fault, the geomorphological behavior of the Htab river watershed and the hydrographic network. Field observations confirmed well these results.

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