Abstract
Abstract. On 10 March 2010, because of the heavy rainfall in the preceding days, the Montaguto landslide (Southern Italy) reactivated, affecting both state road 90 Delle Puglie and the Rome–Bari railway. A similar event occurred on May 2005 and on September 2009. As a result, the National Civil Protection Department (DPC) started an accurate monitoring and analysis program. A monitoring project using the GB-InSAR (ground-based interferometric synthetic aperture radar) system was emplaced to investigate the landslide kinematics, plan urgent safety measures for risk mitigation and design long-term stabilization work.Here, we present the GB-InSAR monitoring system results and its applications in the observational method (OM) approach. GB-InSAR is an established instrument for long-term campaigns aimed at early warning and monitoring during construction works. Our paper further develops these aspects in that it highlights how the OM based on the GB-InSAR technique can produce savings in terms of cost and time in engineering projects without compromising safety. This study focuses on the key role played by the monitoring activities during the design and planning activities, with special reference to the emergency phase.
Highlights
Landslides represent a major geohazard, often causing damage to infrastructure and significant economic loss
Aiming for an operational purpose, such sectors have not been identified based on geomorphological criteria but only on their displacement velocity, as visible on the interferograms (Fig. 6)
The application of the GB-InSAR technique for monitoring the Montaguto earthflow was demonstrated to be capable of continuously acquiring accurate displacement measurements over large areas
Summary
Landslides represent a major geohazard, often causing damage to infrastructure and significant economic loss. The preventive measures for risk mitigation are often lacking or not adequate to guarantee the safety of the people and infrastructure involved in complex landslide systems. New tools such as ground-based interferometric synthetic aperture radar (GB-InSAR) can be used to monitor landslide motion and reduce landslide risk by providing early warnings (Intrieri et al, 2012; Carlà et al, 2016). The major damage related to the Montaguto earthflow was communication route interruption Monitoring with advanced technology and its use in landslide management can be an efficient method for landslide risk management.
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