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Authors: De Martino, P.* 
Tammaro, U.* 
Obrizzo, F.* 
Sepe, V.* 
Brandi, G.* 
D'Alessandro, A.* 
Dolce, M.* 
Pingue, F.* 
Title: La rete GPS dell'isola d'Ischia: Deformazioni del suolo in un'area vulcanica attiva (1998-2010).
Issue Date: Sep-2011
Series/Report no.: 95/ (2011)
Keywords: GPS, Ischia Island, velocity field
Subject Classification04. Solid Earth::04.03. Geodesy::04.03.07. Satellite geodesy 
Abstract: This work shows the experience acquired by the INGV-Osservatorio Vesuviano GPS Team to study the displacement field at Ischia island. After the last GPS survey, carried out in June 2010, we decided to reorganize and to reprocess the GPS data. The results were integrated with those of the three permanent GPS stations operating on the island. Data quality and repeatability have been evaluated. In order to define the GPS velocity field, we combined multi-year solutions in the period from 1998 to 2010.We defined a local reference system and analyzed the time series for a realistic error estimate. After a description of recent volcanic history and dynamics of Ischia, we describe the data-set, data processing strategy, and finally, some considerations on the achieved results are exposed.
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