GNGTS 2017 - 36° Convegno Nazionale

610 GNGTS 2017 S essione 3.2 velocità dei fluidi all’interno dei sedimenti messiniani, interessati dalla dislocazione tettonica, è dell’ordine di 10 -7 m s -1 . Questo valore, è circa tre ordini di grandezza più alto rispetto a quello che si può raggiungere in terreni permeabili per porosità primaria. Bibliografia Bodvarsson, G.; 1973: Temperature inversions in geothermal systems. �� Geoexploration, 11, 141-149. Bredehoeft J., Papadopulos I.S. (1965) Rates of vertical groundwater movement estimated from the Earth’s thermal profile. Water Resour. Res. 1(2), 325-328. Dela Pierre F., Piana F., Fioraso G., Boano P., Bicchi E., Forno M. G., Violanti D., Clari P., Polino R., Balestro G., D’Atri A.; 2003: Foglio 157 “Trino” della Carta Geologica d’Italia alla scala 1: 50.000. APAT, Dipartimento Difesa del Suolo, Roma. Forno M.G., Gattiglio M., Comina C., Barbero D., Bertini A., Doglione A., Irace A., Gianotti F., Martinetto E., Mottura A., Sal� �� a B.; 2015: Stratigraphic and tectonic notes on the Villafranca d’Asti succession in type-area and Castelnuovo Don Bosco sector (Asti reliefs, Piedmont). �� Alpine and Mediterranean Quaternary, 28(1), 5-27. Gattiglio M., Forno, M.G., Comina, C., Doglione A., Violanti, D. and Barbero, D.; 2015: The involving of the Pliocene-Pleistocene succession in the T. Traversola Deformation Zone (NW Italy). �� Alpine and Mediterranean Quaternary, 28(1), 59-70. Ge S.; 1998: Estimation of groundwater velocity in localized fracture zones fromwell temperature profiles. �� J. Volcanol. Geoth. Res., 84, 93-101. Irace A.; 2004: Il Messiniano piemontese: nuovi dati da due aree campione. Tesi di Laurea, Università di Torino, 167 pp. Pasquale V., Verdoya M., Chiozzi P.; 2017: Geothermics Heat Flow in the Lithosphere. �� Springer Briefs in Earth Sciences, Second Edition, 144 pp. Ziagos J.P., Blackwell D.D.; 1986: Amodel for the transient temperature effects of horizontal fluid flow in geothermal systems. J. Volcanol. Geothermal Res., 27, 371-397. Surface waves analysis to detect buried lateral discontinuities: a case study in the Trieste port area J. Boaga 1 , M. Hashemi Jokar 2 , L. Petronio 3 , R. Romeo 3 , A. Affatato 3 , M. Rossi 4 , M.T. Perri 1 , G. Cassiani 1 1 Dipartimento di Geoscienze, Università degli Studi di Padova, Italy 2 Dept. of Civil and Environmental Eng., Shiraz University of Technology, Shiraz, Iran 3 OGS (Istituto nazionale di Oceanografia e di Geofisica Sperimentale), Trieste, Italy 4 Engineering Geology LTH, University of Lund, Sweden We applied the multi-offset surface wave analysis to detect buried lateral heterogeneities in a former industrial site in the coast side of the city of Trieste (‘Area ex-Esso’, Trieste, Italy). The site presents a well-known complex geological setting due to sea/land interaction and massive anthropic interventions. The site was recently characterized via borehole explorations and geophysical surveys in order to plan the re-use of the area. The main lateral heterogeneities consist in an extended buried ancient quay, which divides continental and marine sediments. We collected 2 surface waves surveys along the main discontinuities, where previous borehole data and others geophysical surveys (Electrical Resistivity Tomography) were previously collected (Romeo et al., 2015). We then adopted the MOPA (multi offset phase analysis) technique in order to detect the lateral discontinuities. Our result can be compared with the previous data for subsoil modeling. The models can be tested with synthetics seismograms to be compared with the real data. Surface wave methods are nowadays widely adopted tools for seismic site purposes as shear waves velocity characterization. Surface wave can be recorded using controlled source methods, as active surface waves methods, or recording seismic noise as in the passive approaches (Louie 2001; Socco and Strobbia, 2014). The main limitation to classical surface wave methods,