GIS based statistical and physical approaches to landslide susceptibility mapping (Sebinkarahisar, Turkey)

• Published in: Bulletin of engineering geology and the environment Vol. 68; no. 4; pp. 459 - 471
• Main Authors: Yilmaz, Işık, Keskin, Inan
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Berlin/Heidelberg : Springer-Verlag 01-11-2009; Springer-Verlag
• Subjects: Earth and Environmental Science; Earth Sciences; Foundations; Geoecology/Natural Processes; Geoengineering; Geotechnical Engineering & Applied Earth Sciences; Hydraulics; Nature Conservation; Original Paper; Turkey; Susceptibility map; Carte de sensibilité; Sebinkarahisar (Giresun, Turkey); Fréquence d’événements; SINMAP; GIS; SIG; Glissement de terrain; Toe erosion; Sebinkarahisar (Giresun, Turquie); Landslide; Frequency ratio; Erosion de pied de versant
• ISSN: 1435-9529; 1435-9537
• DOI: 10.1007/s10064-009-0188-z

The case study presents GIS-aided statistically and physically based landslide susceptibility mapping in the landslide-prone Avutmus district of Sebinkarahisar (Giresun, Turkey). Field investigations, analysis of geological data and laboratory tests suggested that two important factors have acted together to cause sliding: ground water pressures and toe erosion. Frequency ratio (FR) and stability index mapping (SINMAP) were used to create the landslide susceptibility maps based on a landslide inventory; distance from drainage systems, faults and roads; slope angle and aspect; topographic elevation and topographical wetness index; and vegetation cover. Validation of the models indicated high quality susceptibility maps with the more realistic results were obtained from the statistically based FR model.