PREDICTION OF THE OCCURRENCE OF SLOPE INSTABILITY PHENOMENA THROUGH GIS-BASED HAZARD ZONATION

Slope instability hazard assessment is based on the analysis of the te rrain conditions at sites where slope failures occurred in the past. F or the analysis of the causative factors the application of geographic information systems (GIS) is an essential tool in the data analysis a nd subsequent hazard assessment. Three scale levels of hazard mapping are defined. A direct experience-driven mapping at reconnaissance leve l, a statistical approach to determine the causative factors in a quan titative susceptibility mapping and a methodology at large-scale makin g using of deterministic models.