Bianchini, Silvia

Casagli, Nicola

Del Soldato, Matteo

Frodella, William

Nolesini, Teresa

English

Florence Research

Geophysical Research AbstractsVol. 19, EGU2017-12265, 2017EGU General Assembly 2017© Author(s) 2017. CC Attribution 3.0 License.Analysis of potential urban unstable areas and landslide-induced damageson Volterra historical site through a remote sensing approachMatteo Del Soldato (1,2), Silvia Bianchini (1), Teresa Nolesini (1), William Frodella (1), and Nicola Casagli (1)(1) Earth Sciences Department, University of Firenze - Via La Pira 4, 50121 Firenze (Italy), (2) Department of Earth Sciences,Environment and Resources, Federico II University of Napoli, Largo San Marcellino 10, 80138 Napoli (Italy)Multisystem remote sensing techniques were exploited to provide a comprehensive overview of Volterra (Italy)site stability with regards to its landscape, urban fabric and cultural heritage. Interferometric Synthetic ApertureRadar (InSAR) techniques allow precise measurements of Earth surface displacement, as well as the detection ofbuilding deformations on large urban areas. In the field of cultural heritage conservation Infrared thermography(IRT) provides surface temperature mapping and therefore detects various potential criticalities, such as moisture,seepage areas, cracks and structural anomalies.Between winter 2014 and spring 2015 the historical center and south-western sectors of Volterra (Tuscany region,central Italy) were affected by instability phenomena. The spatial distribution, typology and effect on the urbanfabrics of the landslide phenomena were investigated by analyzing the geological and geomorphological settings,traditional geotechnical monitoring and advanced remote sensing data such as Persistent Scatterers Interferometry(PSI). The ground deformation rates and the maximum settlement values derived from SAR acquisitions of histor-ical ENVISAT and recent COSMO-SkyMed sensors, in 2003-2009 and 2010-2015 respectively, were comparedwith background geological data, constructive features, in situ evidences and detailed field inspections in orderto classify landslide-damaged buildings. In this way, the detected movements and their potential correspondenceswith recognized damages were investigated in order to perform an assessment of the built-up areas deformationsand damages on Volterra. The IRT technique was applied in order to survey the surface temperature of thehistorical Volterra wall-enclosure, and allowed highlighting thermal anomalies on this cultural heritage element ofthe site.The obtained results permitted to better correlate the landslide effects of the recognized deformations in theurban fabric, in order to provide useful information for future risk mitigation strategies to be planned by the localauthorities and the involved technicians and conservators.

Analysis of potential urban unstable areas and landslide-induced damages on Volterra historical site through a remote sensing approach

https://flore.unifi.it/bitstream/2158/1094402/1/Del%20Soldato%20et%20al%20GRA%20vol19%20EGU%202017.pdf

Analysis of potential urban unstable areas and landslide-induced damages on Volterra historical site through a remote sensing approach

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