Document Type : Original Article
Authors
1
M.S. in Geomorphology, Department of Marine Geology, Faculty of Marine Natural Resources, Khorramshahr University of Marine Science and Technology, Khorramshahr, Iran.
2
Associated Professor, Department of Environment, Department of Marine Geology, Faculty of Marine Natural Resources, Khorramshahr University of Marine Science and Technology, Khorramshahr, Iran.
3
Department of Geography, Islamic Azad University, Najaf abad Branch, Najaf abad, Iran.
4
Department of Environment, Faculty of Natural Resources and Environment, Malayer University, Malayer, Iran.
Abstract
This study set out to investigate and evaluate the effect of hillslope geometry and topography on the Maroon basin drainage network. In so doing, using topographic maps and aerial photographs of different periods and different software such as SAGA, ArcGIS and QGIS, a field visit to the study area, morphology and three-dimensional geometry of complex hillslopes based on two factors of plan shape (convergence, divergence, parallel) and profiles curvature (convex, concave and straight) were classified into 9 different forms. Based on the results, the convex hillslopes of the basin in which mist of the orders 5 and 6 flow are more geomorphically stable; while the concave hillslopes in which the streams of orders 2, 3, and 4 of the basin flow are more unstable due to the concentration of water at the lowest point of the slope and the help of hydrostatic pressure. Based on the obtained results, study basin has high erodibility and high potential for landslides and this phenomenon always threatens the inhabitants of the region and agricultural lands as well. Given the results, there was a relationship between hydrological properties of surface sediments and soils with topographic indices and hillslope geometry, so knowledge of these indices and properties in terms of the impact on the variability of soil hydraulic properties and surface sediments in order to achieve sustainable development in the field of geomorphological studies of the basin seems to be quintessential.
Keywords
