GNGTS 2013 - Atti del 32° Convegno Nazionale

Tab. 2 – Mean value and root mean square of the differences between the velocities of the Euref solution (1600 GPS week, 2010/09/06, Bruyninx and Kenyeres, 2008) and the velocities obtained by the GPS network here considered: the Austrian Monitoring Network (AMON, Höggerl et al. , 2011), the REGAL (Réseau GPS Permanent dans les Alpes) permanent GPS network located in the Western Alps and their surroundings (Calais et al. , 2000, 2002) and the network analyzed in this paper. N is the number of sites in common with the Euref network. Source N North East Vertical Amon 6 0.11 ± 0.25 0.01 ± 0.43 0.39 ± 0.71 Regal 28 0.05 ± 0.29 -0.21 ± 0.40 -0.33 ± 0.80 This paper 21 0.11 ± 0.29 -0.34 ± 0.38 -0.80 ± 0.76 Acknowledegments. 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 Agnew, D. C., 1992. The time domain behavior of power law noises . Geophys. Res. Lett. 19 (4), 333–336. Allan, D. W., 1966. Statistics of atomic frequency standards. Proc. IEEE, 54 (2), 221-230. Arca S. and Beretta G.P.; 1985: Prima sintesi geodetica-geologica sui movimenti verticali del suolo nell’Italia Settentrionale. Boll. Geod. Sci. Aff., 44, 125-156. Altamimi Z., Collilieux X., Legrand J., Garayt B. and Boucher C.; 2007: ITRF2005: a new release of the International Terrestrial Reference Frame based on time series of station positions and Earth Orientation Parameters . J. Geophys. Res., 112, B09401. doi:10.1029/2007JB004949. Bennett, R.A., Serpelloni E., Hreinsdóttir S., Brandon M.T., Buble G., Basic T., Casale G., Cavaliere A., Anzidei M., Marjonovic M., Minelli G., Molli G., and Montanari A., 2012: Syn-convergent extension observed using the RETREAT GPS network, northern Apennines, Italy. J. Geophys. Res., 117, B04408, doi:10.1029/2011JB008744. Barletta, V.R., Ferrari, C., Diolaiuti, G., Carnielli, T., Sabadini, R., Smiraglia C.; 2006: Glacier shrinkage and modeled uplift of the Alps. Geophys. Res. Lett. 33, L14307, doi:10.1029/2006GL026490. Baldi P., Casula G., Cenni N., Loddo F. and Pesci, A.; 2009: GPS-based monitoring of land subsidence in the Po Plain (Northern Italy). Earth Planet. Science Letts., 288, 204-212, doi:10.1016/j.epsl.2009.09.023. Baldi, P., Casula, G., Cenni, N., Loddo, F., Pesci, A., Bacchetti, M., 2011. Vertical ad horizontal crustal movements in Central and Northern Italy . Boll.Soc.Geol.It. (Ital. J. Geosci.) 52, 4, 667-685. Bonsignore, F., 2007. Il monitoraggio della subsidenza a scala regionale in Emilia-Romagna . Proceedings of the meeting La subsidenza in Emilia-Romagna: Il monitoraggio tramite interferometria satellitare, esperienze a confronto. ARPA, Bologna, Italy. 3 dicembre 2007. Bonsignore F.; 2008: Il monitoraggio della subsidenza a scala regionale in Emilia-Romagna . Arpa Rivista, 1, 16-17. Bos M.S., Fernandes R.M.S., Williams S. D. P. and Bastos L., 2008: Fast error analysis of continuous GPS observations . J. Geod., 82 (3), 157-166, doi:10.1007/s00190-007-0165-x. Bos M.S., Bastos L. and Fernandes R.M.S.; 2010: The influence of seasonal signals on the estimation of the tectonic motion in short continuous GPS time-series . J. Geodyn., 49: 205-209. Bouin M.N. and Woppelmann G.; 2010: Land motion estimates from GPS at tide gauges: a geophysical evaluation. Geophys. J. Int, 180, 193-209, doi: 10.1111/j.1365-246X.2009.04411.x Bruyninx, C., Kenyeres, A., 2008: EUREF densification of the ITRF2005, EUREF-mail 4142, http://www.epncb.oma.be/ ftp/mail/eurefmail.4142. Calais, E., Galisson, L., Stéphan, J.F., Delteil, J., Deverchère, J., Larroque, C., Mercier de Lépinay, B., Popoff, M., Sosson, M., 2000. Crustal strain in the Southern Alps, France, 1948–1998, Tectonophysics 319, 1-17. Calais, E., Nocquet, J.M., Jouanne, F., Tardy, M., 2002. Current strain regime in the western Alps from continuous GPS measurements, 1996-2001, Geology 30, 651-654. 167 GNGTS 2013 S essione 1.2