Tectonics Activity Assessment of Southwest of Zarrinrod (south of Zanjan)

The study area is south west of Zarrinrod in south of Zanjan province. In this study, various indicators including Ratio of valley floor width to valley height index (Vf), Stream length-gradient index (SL), Hypsometric integral index (Hi), Basin shape index (Bs) and Drainage drainage symmetry index ( AF) and the pattern of streams were calculated. The combination of these indexes can be used to determine the relationship between the active tectonics index (Iat). In this study, GIS 10.5 Arc was used to calculate the morphometric indices of topographic maps and DEM of the region. The most drainage  pattern  in this study area is a tree channel. Based on the studies done in the study area, tectonics are divided into two parts with moderate and low activity.