3D multi-temporal reconstructions (4D) of the geometries
and the kinematics of a portion of the 35 km coseismic surface
ruptures related to 2016 Central Italy earthquakes are presented.
The analysis integrates a traditional structural field survey with the
data extracted from 3D point cloud models. These models were
generated using a Structure-from-Motion (SfM) algorithms applied
to georeferenced low-altitude aerial digital photos, both zenithal and
oblique, acquired with small Unmanned Aerial Vehicles (UAV).
Several comparisons were performed between data measured in the
field and the same data detected on the point cloud models. The
results show errors of a few cms, where models generally
overestimate the real data. The coseismic ground ruptures typically
show multiple overlapping scarps that can be divided into kinematic
sets that occur throughout the width of the pre-existing SW dipping
normal fault zones
