Debris flows and debris avalanches initiation and runout susceptibility assessment in Campania region (Italy)

Sectors of the Campania region (southern Italy), where pyroclastic airfall deposits cover carbonate slopes, have frequently experienced debris avalanches and flows. These landslides are triggered by heavy rainfall in last century caused severe destruction hundreds deaths. Their occurrence is controlled interaction several factors, both natural human induced. The initial failure linked with presence morphological discontinuities such as rocky scarps road cuts, which interrupt stratigraphical continuity an “infinite slope”. Here main criteria for susceptibility analysis defined trying to develop a procedure identify highly-susceptible sources, runout invasion areas.