Abstract
ABSTRACT The landslide inventory of the Picentino basin was realized at 1:25,000, with focus on main geomorphological features affecting slope stability. It is based on different sets of air-photos (scales 1:33,000–1:18,000, dated up to 1998), and on field surveys. Among shallow landslides, channelized debris flows strongly prevail, originated as debris slides on moderately steep slopes. Further sectors are affected by deeper slope movements of greater extent. Items related to tectonics, erosion processes, and anthropized sectors are also mapped. Relevant predisposing factors to slope instability are shown in 1:100,000 thematic maps. In addition, shallow landslides of the 1998 inventory were compared to those derived from two event-based inventories (PSAI 2002, PSAI 2011, dated 1998–2005 at 1:13,000–1:10,000). Discrepancies are mainly ascribable to types of employed air-photos, age of surveys, scale of mapping, and freshness of forms, remarking the relevance of suitable shallow-landslide inventories for susceptibility evaluations.
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