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Authors: Agnesi, V.*
Rotigliano, E.*
Tammaro, U.*
Cappadonia, Chiara*
Conoscenti, Christian*
Obrizzo, F.*
Di Maggio, C.*
Luzio, D.*
Pingue, F.*
Title: GPS Monitoring of the Scopello (Sicily, Italy) DGSD Phenopmenon: Relationships between Surficial and Deep-Seated Morphodynamics
Issue Date: Sep-2014
DOI: 10.1007/978-3-319-09057-3_232
Keywords: DGSD phenomena
GPS monitoring
large-scale landslide
Scopello (Sicily, Italy)
Abstract: The Scopello area, which is located along the north-western Tyrrhenian coastal sector of the Sicilian chain (Italy), is widely affected by Deep-seated Gravitational Slope Deformation (DSGSD) phenomena, which are mainly the result of a geomorphologic setting marked by the outcropping of an overthrust plan, limiting a brittle fractured carbonate slab, laid onto a ductile marly-clayey substratum. Due to the very advanced stage of the deformation phenomena, a coupled morphodynamic style has established between shallow landslides and DSGSD phenomena, affecting the exhumed ductile substratum and the overlaying rigid dismantled slab, respectively. A GPS network was realized for monitoring the Scopello landslide, consisting of 27 vertexes, which were directly cemented either onto rock or debris blocks or concrete structures rooted on the marly–clayey substratum. The geometry of the network and the geodetic technique adopted for the GPS signal acquisition allow the survey for a sub-centimetric precision in the positioning of the vertexes. On February 2005 earth-flows and block/slab-slides movements affected the head sector of the landslide area. The displacements field, which was derived by comparing the results of a pre- (2004) and a post-event (2005) GPS surveys, is here analyzed and discussed. On the basis of the observed displacement, the connection between surficial and deeper ground deformations is confirmed.
Appears in Collections:Conference materials
05.09.99. General or miscellaneous

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