LANDFORM MAPS AN EXAMPLE OF KÜÇÜK MENDERES WATERSHED

Abstract

Landforms can be prepared easily due to the advantages of remote sensing, geographical information systems, automatic generation of landforms, and storage in databases. Therefore, it has begun to be used more effectively by many disciplines interested in physical plans such as geology, geomorphology, and soil. In this study, a land-use map was prepared in the Küçük Menderes Basin, one of Turkey's toluene water basins, with the Topographic Position Index (TPI) using Aster GDEM with a spatial resolution of 30 m in the Geographical Information Systems environment. The regional geographic structure was examined with environmental variables, such as slope and curvature, generated from the DEM data in the formation of the land morphology. The Jennes algorithm used in TPI calculation uses a multiscale approach by inserting a quadratic polynomial to the window size determined using least squares. The research results were compared using the DEM data with 300 m and 2000 m window widths. The morphological classes formed were gathered in 10 categories as Canyons, Shallow valleys, Upland drainages, U-Shape valleys, Plains, Open slopes, Upper slopes, Hills in valleys, Midslope ridged, High ridges.