*5.2. InSAR Analysis*

Space-borne interferometric synthetic aperture radar (InSAR) data were used to analyze the slope deformation [107–110]. Interferometric permanent scatters (PSs) are used to investigate the temporal and spatial superficial slope deformation. To detect ground displacement, we used only high-PS coherence (0.6–1) located on built dolomitic blocks and the metamorphic rock outcrops. Low-coherence PSs, which are not useful, are located on rockfall deposits and in vegetated areas. We used the Sentinel-1 and European Remote Sensing (ERS) satellites (Table 1) and took into account the line-of-sight (LOS) velocities. We used a dataset from 1992 to 2000 from the ERS satellite and a dataset from 2014 to 2020 from Sentinel 1. The processed data from ERS and Sentinel 1 were provided, respectively, by Ministero dell'Ambiente e della Tutela del Territorio e del Mare (Italy) and the Geological Survey of Norway. The total area analyzed covered the entire Pardu Valley and Quirra Valley. Four focus areas (Table 1) that showed interesting results were analyzed by using time series of PSs to understand the landslides' temporal evolution.


**Table 1.** Parameters of the InSAR data on the sectors in focus.
