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Authors: Tammaro, U.* 
De Martino, P.* 
Obrizzo, F.* 
Brandi, G.* 
D'Alessandro, A.* 
Dolce, M.* 
Malaspina, S.* 
Serio, C.* 
Pingue, F.* 
Title: Somma Vesuvius volcano: ground deformations from CGPS observations (2001-2012)
Journal: Annals 
Series/Report no.: /56 (2013)
Publisher: INGV, Istituto Nazionale di Geofisica e Vulcanologia
Issue Date: Jun-2013
DOI: 10.4401/ag-6462
Keywords: Ground deformation, CGPS, Somma-Vesuvius.
Subject Classification04. Solid Earth::04.08. Volcanology::04.08.06. Volcano monitoring 
Abstract: This paper is a contribution to the evaluation of ground deformations at Somma-Vesuvius volcano by means GPS measurements from 2001 to 2012. In this study we use a dataset from nine continuous GPS stations of the Neapolitan Volcanoes Continuous GPS network (NeVoCGPS), which covers the Neapolitan volcanic area, and is operated by the Istituto Nazionale di Geofisica e Vulcanologia. The GPS data processing is performed by the Bernese software v. 5.0. The results of the data processing show that the dynamics of the Somma-Vesuvio volcano, between 2001 and 2012, is characterized by a general subsidence, with maximum values on the Gran Cono at BKNO (−11.7 ± 0.65 mm/year) and BKE1 (−4.92 ± 0.36 mm/year) stations. The subsidence decrease from the crater down to the coast and the horizontal displacements are concentrated in Gran Cono area, the youngest part of the volcano. The parameters of the principal strain components indicate that Somma-Vesuvius is affected by a predominant contraction phase, which is concentrated in the areas with the greatest altitudes.
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