GNGTS 2013 - Atti del 32° Convegno Nazionale

1. micro fractures (change in pressure in the pores); 2. water flow in karst conduits with phenomena type exhaust siphons, water hammer, etc. The experience of combining Università di Firenze infrasound instrumentation and expertise and OGS seismic instrumentation and expertise proved in the Fadalto case to be very valuable and useful for other Civil Defence and nuclear test explosions monitoring (CTBTO) applications and purposes. Moreover, OGS and Università di Firenze are planning to join forces to star addressing the issue of real time seismic and infrasound monitoring of snow avalanches (Valt et al. , 2009). Acknowledgements. The authors wish to thank all the colleagues at Florence University and OGS who contributed in different ways to this work, including among others Dr. Giacomo Ulivieri from Florence University for his spectrogram analysis of the infrasound recorded data of the suspected rumbles and Dr. Pier Luigi Bragato fromOGS for the coordination of the overall multi-disciplinary investigation held in the Fadalto area and for his personal support to this work. References Autostrade Spa; 1985: Progetto Esecutivo Autostrada Meste-V.Veneto-Pian di Vedoia - Relazione Geologica . Rapporto interno, 41 pp. Bragato P. L., Di Bartolomeo P., Pesaresi D., Plasencia Linares M. P., Saraò A.; 2011: Acquiring, archiving, analyzing and exchanging seismic data in real time at the Seismological Research Center of the OGS in Italy . Annals of Geophysics, 54(1) , 67-75, doi: 10.4401/ag-4958. CRS Staff; 2011: Indagini sismologiche sui fenomeni acustici percepiti in Val Lapisina (Vittorio Veneto) nel 2011 . In: Slejko D. e Rebez A. (eds), Gruppo Nazionale di Geofisica della Terra Solida, 30° Convegno Nazionale, Riassunti estesi delle comunicazioni. Mosetti Tecniche Grafiche, Trieste, pp. 97-100. MacAyeal D. R., Okal E. A., Aster R. C. and Bassis J. N.; 2008: Seismic and hydroacoustic tremor generated by colliding icebergs . J. of Geoph. Research, 113 , F03011, doi:10.1029/2008JF001005. Pellegrini G. B.; 2000: Il Vallone Bellunese e la valle Lapisina . In: Bondesan A., Caniato G., Vallerani F., Zanetti M. (a cura di) Il Piave, Cierre Edizioni, 60-66. Pellegrini G.B. and Surian N.; 1996: Geomorphological study of the Fadalto landslide, Venetian Prealps, Italy . Geomorphology, 15 , 337-350. Valt M. and Pesaresi D.; 2009: Detecting snow avalanches with seismic stations in North-east Italy: First results of dataset analysis, ISSW 09 - International Snow Science Workshop, Proceedings, 458. Integration of CGPS and meteorological data for atmospheric precipitable water retrieval: some case histories concerning the Campania Region U. Riccardi 1 , U. Tammaro 2 , P. Capuano 3 1 Dipartimento di Scienze della Terra, dell’Ambiente e delle Risorse (DiSTAR) University “Federico II” of Naples, Italy 2 Istituto Nazionale di Geofisica e Vulcanologia Sezione “Osservatorio Vesuviano” Naples, Italy 3 Department of Physics “E.R. Caianiello” University of Salerno Fisciano, Italy Introduction. This research deals with an application of GPS technique in meteorology aimed mainly at weather hazard mitigation. We report on the analysis of the observed tropospheric delay on some continuous GPS (CGPS) stations belonging to the RING (Rete Integrata Nazionale GPS) Italian network (Avallone et al. , 2010) and NeVoCGPS (Neapolitan Volcanoes Continuous GPS) network (Bottiglieri et al. , 2010). Mainly we focus on the potentialities coming from the integration among meteorological observations (air pressure, temperature, humidity, rain and satellite radio images) and CGPS data in studying the time evolution of the atmospheric precipitable water PW. We report on some selected extreme meteorological events set up on the Campania region. Since long time ago Global Positioning System (GPS) has acknowledged for other than the classical geodetic positioning even as a tool to study the Earth and other planets atmosphere and namely its water vapor content, if any, with an accuracy comparable to other techniques and means of measurement (Bevis et al. , 1992). Most of the ideas in this subject originate from geodesists and geophysicists spending efforts trying to model and removing the atmospheric “noise”. Hence the atmospheric effect is going to be time to time transformed from an annoying noise source, degrading the accuracy of positioning, into a valuable meteorological 200 GNGTS 2013 S essione 3.3