FULLY-AUTOMATIC LANDSLIDE SUSCEPTIBILITY ANALYSIS BY GEOGRAPHICAL INFORMATION SYSTEM (GIS): A CASE STUDY IN ŞAVŞAT CITY, TURKEY

Abstract

In the literature, different methods and parameters were used to produce the most accurate Landslide Susceptibility Map (LSM) in each of the studies. In this study, it was aimed to produce a GIS-based LSM by the The Frequency Rate (FR) method in the selected study area, to calculate the accuracy of the produced LSM and to perform all these operations fully-automatically. In line with this purpose, user-interface programs were developed in the GIS environment. The FR method that is commonly used in the literature and gives high accuracy was used to produce an LSM. Slope, aspect, elevation, lithology, distance to fault, distance to river, Normalized Difference Vegetation Index (NDVI), land use and rainfall parameters were taken into account to produce the LSM. Consequently, the accuracy of the LSM obtained by the FR method was calculated to be 89 %.

Keywords

• gis
• landslide
• landslide susceptibility analysis
• user interface program