Landslide susceptibility assessment of The Germenci̇k-İncirli̇ova (Aydin) region

The Germencik-İncirliova (Aydın) region, located within the Büyük Menderes basin, is one of the regions where problems caused by landslides. Within the scope of the thesis, landslide susceptibility assessments, which determine where landslides will occur in the future, were made by using the Frequency Ratio method by evaluating the existing landslide inventory maps and environmental variables that cause landslides. Based on the historical landslide inventory, the landslide inventory map has been updated by field studies. Accordingly, there are 59 landslides with a total area of 6.85 km2. In addition, digital elevation model, slope, curvatures and roughness index and geological maps were prepared as the predisposing factors for landslides. The relationship between landslides and the environmental variables that cause landslides was statistically evaluated using the frequency ratio method. As a result, it was determined that geology, digital elevation model and slope are the most important factors affecting landslide development in the region. The landslide susceptibility map obtained was evaluated in 5 classes. 13.76% of the study area is very low 27.34% low 21.33% medium 26.12% high and 11.44% very high. 0.04% of landslides are located very low 0.51% low 6.37% moderate 26.33% in high and 66.75% very highly susceptible areas.