بررسی نقش تکتونیک فعال برالگوی شبکه آبراهه‌ای نیمه جنوبی حوزه آبریز حاج علیقلی(جنوب شرقی دامغان)

Abstract

Hadj-Aligholi basin is situated between southern border of the central Alborz and north side of the central Iran regions. With respect to especial structural geology of Hadjaligholi salt desert basin and lack of the adequate studies in this area, morphotectonic features have been studied using GIS and remote sensing processing. At this research, five southern subcatchments in Hajaligholi watershed are studied. Neotectonic index factors such as: river gradient index, mountain front face, drainage asymmetry factor, transverse topographic symmetry factor and hypsometric index are determined. The results clearly are shown that drainage networks of the basin follow neotectonic predesign pattern. Tectonic activity increase in the basin from southern to northern part.