The shape of settlement fabric and geomorphology: the case studies of Pisticci and Corleto Perticara (Basilicata, Italy)

Italy is a geologically complex and relatively young territory that is particularly vulnerable to natural disasters (i.e. earthquakes, flooding, landslides, etc.). In particular, landslide activity is considered one of the most relevant process shaping the Italian peninsula, often closely affecting urban and industrial areas and infrastructures. Landslide activity in southern Italy strongly influenced the development of urban areas by controlling the shape and the areal extend of the urban settlements. In this paper, we propose a multidisciplinary approach capable of assessing the correlation between landslides and the spatial distribution of urban fabric. To this aim we consider as case studies the two municipalities of Pisticci and Corleto Perticara, in the Basilicata region in southern Italy, that strongly differ for the geological contexts and landslide types. The evolution in time of the landslide activity and the shape variations of the two considered settlement systems is described in terms of shape index from 1950 to 2006. Starting from the description of the two study areas, from both the geological and the urban point of view, the shape index will be calculated. Eventually, the results obtained will be compared with the perimeters of the urban centers defined by the respective urban planning regulations.