Abstract
AbstractWe investigated the northern‐central portion of Sicily region (southern Italy) using aerial photographs and Synthetic Aperture Radar (SAR) data obtained by ERS1 and ERS2 satellites. This area shows a geological‐structural setting generated by the tectonic superposition of Apenninic‐Maghrebian carbonatic structures on terrigenous deposits. Such a structural setting favoured the development of large‐scale gravity‐driven phenomena (known in the geological literature as deep‐seated gravitational slope deformations) that are mostly responsible for the landscape evolution of the whole area. Morphological evidences such as landslides, sacking or rock‐flow, lateral spread and block slide can be detected from photogeological analysis. In order to understand the temporal behaviour and spatial distribution of such deformations we applied the interferometric SAR (InSAR) technique. Interferograms show fringe patterns spatially coinciding with some of the large‐scale gravitative phenomena previously identified by means of aerial‐photo analysis. The comparison between photogeological data and InSAR results allows delimiting the active sectors in the study area.
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