Catalogue of landslides — Polygonal strips

As part of the Extraordinary Remote Sensing Plan (PST), in 2008 the Directorate-General for the Protection of Land and Water Resources launched, in collaboration with the Regions, a collection of data belonging to the IFFI inventory, which the Regions themselves, with their own resources, continue to update. In order to provide a complete and up-to-date picture of the distribution of landslides, information layers have been prepared organised according to the geometries and some types of movement starting from the regional databases, appropriately homogenised. The Landslides Catalogue project contains the following information updated in 2009: Identification Points Franosis Phenomenon (PIFF), Linear Frans, Polygonal Frans, Areas, Gravity Deformations Profsante (DGPV), Directions. In particular, the polygonal Frane information layer represents landslides of smaller allergy size: depending on the scale of the topographic base used for the detection, a minimum value of the mapable area was introduced (scale=1:5,000 minimum area=400 m², scale=1:10,000 minimum area=1600 m²; scale=1:25,000 minimum area=10.000 m²).