*3.1. Landslide Inventory*

Such a dataset provides information about the landslide events that occurred in the past in a given region. Hence, this information is crucial for any quantitative LS modeling effort. A database maintained by the Laboratory of Engineering Geology at the Department of Geology at University of Patras referring to landslides that occurred between 2000 and 2015 [42], and field surveys, were initially exploited for the spatial locations of past landslides in the study area. Then, multi-temporal Google Earth satellite imagery (Figure 2) was used for their delimitation. Based on the classification proposed by Varnes [1], for this study, the term landslide included shallow debris flows and earth rotational slides, varying in extent from some hundreds to several thousands of meters squared (Table 1). Since it is not always possible to differentiate the depletion and accumulation zones of these landslide types in an inventory map [18], these zones were mapped together in an entire area forming a single polygon feature for each landslide. Therefore, 60 landslide polygons were eventually represented in the relevant inventory map (Figure 1).


