Based on an inventory of 721 rock landslides
happened in the time span between 1899 and
2019 (120 years), the rockfall susceptibility
affecting the Sorrento-Amalfi Peninsula has
been evaluated. Both wide rock landslides (e.g.:
Amalfi 1899, M. Catiello 2002) and small
movements involving cliffs only a few hundred
square meters wide, affect this area. Landslide
data from different sources (IFFI Catalogue,
bibliography, newspapers, websites, and onsite
surveys) were processed to obtain the areal
rockfall density (number of landslides/km2) of
an area of about 303 km2 (including Capri),
divided into 33 municipal territories. Also, the
linear densities (number of landslides/km) for
the two main state roads crossing the region
(no. 163 Amalfitana and no. 145 Sorrentina),
and coastline were evaluated. Even though
there were an incomplete information
concerning many failures, it was possible to
draw susceptibility maps, the contents of which
are explained and commented below. These
maps can be considered useful tools for
promoting the sustainable development of the
area
