Author:
Ciuffi Pierpaolo,Bayer Benedikt,Berti Matteo,Franceschini Silvia,Simoni Alessandro
Abstract
Landslides are widespread geological features in Italy’s Northern Apennines, with slow-moving earthflows among the most common types. They develop in fine-grained rocks and are subject to periodic rainfall-induced reactivations alternating to phases of dormancy. In this paper, we use radar interferometry (InSAR) and information about landslide activity to investigate deformation signals on an areal basis and to assess the dynamics of recently reactivated earthflows. We use traditional two-pass interferometry by taking advantage of the short revisit time of the Sentinel 1 satellite to characterize 4 years of slope deformations over the 60 km2 study area, where 186 landslides are mapped. Our results show that most intense and sustained deformation signals are associated with phenomena on the verge of reactivation, indicating that radar interferometry may have a potential for early warning purposes. By focusing on three specific earthflow reactivations, we analyze their dynamics through the years that preceded their failure. Despite inherent uncertainties, it was possible to retrieve the deformation signal’s temporal evolution, which displayed seasonally recurring accelerations, peaking during the major precipitation episodes in the area.
Subject
Fluid Flow and Transfer Processes,Computer Science Applications,Process Chemistry and Technology,General Engineering,Instrumentation,General Materials Science
Reference56 articles.
1. Socioeconomic significance of landslides;Schuster;Transp. Res. Board Spec. Rep.,1996
2. Monitoring, prediction, and early warning using ground-based radar interferometry
3. Radiocarbon Data on Lateglacial and Holocene Landslides in the Northern Apennines
4. The landslides of the Emilia Apennines (northern Italy) with reference to those which resumed activity in the 1994–1999 period and required Civil Protection interventions;Bertolini;Quad. Geol. Appl.,2001
5. Remote sensing techniques for landslide studies and hazard zonation in Europe
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