GNGTS 2013 - Atti del 32° Convegno Nazionale

Acknowledgements. We are grateful the following Institutions: ASI, ARPA Piemonte, FOGER (Fondazione dei Geometri e Geometri Laureati dell’Emilia Romagna), FREDNET (OGS), LABTOPO (University of Perugia), LEICA- Italpos, Regione Abruzzo, Regione Friuli Venezia Giulia, Regione Liguria, Regione Lombardia, Regione Piemonte, Regione Veneto, RING-INGV, Provincia Autonoma di Bolzano (STPOS), Provincia Autonoma di Trento (TPOS), STONEX, which have kindly made available GPS recordings. We are grateful to Settore - Coordinamento Regionale Prevenzione Sismica Dir. Gen. Politiche Territoriali e Ambientali Regione Toscana and Servizio Geologico, Sismico e dei Suoli Regione Emilia Romagna for the economic and logistic support. The figures have been carried out by the Generic Mapping Tools (Wessel and Smith, 1998). References Allan D. W., 1966. Statistics of atomic frequency standards . Proc. IEEE, 54(2), 221–230. 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