GNGTS 2016 - Atti del 35° Convegno Nazionale

GNGTS 2016 S essione 3.1 503 The unit interfaces derive from the 2D interpolation with a mesh-grid along the line and depth directions of 50x50 m of the 3D-geological-geophysical model along the trace of the CROP18A line. Besides the model derived from the reconstructed 3D-geological geophysical model, we have also calculated the seismic response of the velocity model along the line obtained by Accaino et al. (2005) with the tomographic inversion. The preliminary results (Fig. 2) indicate that the seismic modelling along the CROP18A is mainly influenced by the geometries and by the impedance contrast between the first three units. The effects of the shallow units seem contaminate the synthetic section up to 4 sec of TWT times. Although the preliminary state of our work, we can affirm that in the processing phase and during the seismic interpretation of this line these effects should be accurately considered in order to avoid misinterpretation of the deeper portion of the recorded seismic section. Acknowledgment. The research was funded by Project IMAGE in the framework of the European Community’s Seventh Framework Programme under grant agreement No. 608553. References Accaino F., Tinivella U., Rossi G. & Nicolich R. 2005. Imaging of CROP-18 deep seismic crustal data. Boll. Soc. Geol. It., Volume Speciale n. 3, 195-204. Batini F., Burgassi P.D., Cameli G.M., Nicolich R. & Squarci P. 1978. Contribution to the study of the deep lithospheric profiles: «deep» reflecting horizons in Larderello-Travale geothermal field. Mem. Soc. Geol. It., 19, 477-484. Batini F., Brogi A., Lazzarotto A., Liotta D. & Pandeli E. 2003. Geological features of Larderello–Travale and Mt.Amiata geothermal areas (southern Tuscany, Italy). Episodes 26 (3), 239–244. Bertini G., Gianelli G. & Battaglia A. 1996. Risultati ed interpretazione delle datazioni radiometriche (metodo 230Th/ 234U) dei campioni di minerali idrotermali presenti nelle rocce attraversate dai sondaggi geotermici (Larderello e Monteverdi) e negli affioramenti di rocce mineralizzate (Sassa e Canneto-Malentrata), ENEL-CNR-CISE internal report, Pisa 1996, 18 pp. CREWES - Consortium for Research in Elastic Wave Exploration Seismology. CREWES MATLAB Toolbox. University of Calgary. https://www.crewes.org/ResearchLinks/FreeSoftware/ Gianelli G., Manzella A. & Puxeddu M. 1997. Crustal models of the geothermal areas of Southern Tuscany. Tectonophysics 281, 221 – 239. Scrocca D., Doglioni C., Innocenti F., Manetti P., Mazzotti A., Bertelli L., Burbi L., Doffizi S. (Eds) 2003. CROP Atlas: seismic reflection profiles of the Italian crust. Memorie Descrittive della Carta Geologica d’Italia, 62, 1- 194, ISBN: 88-240-2548-X. Multiscale study of the Adriatic magnetic anomaly M. Milano, M. Fedi University Federico II, Naples, Italy Introduction. The complex geological setting of the Adriatic region is still an interesting subject of debate and interpretation. The north-eastern portion of theAdriatic Sea is characterized by a wide magnetic anomaly extending up to the coast of Croatia. The Adriatic Magnetic Anomaly represents the main magnetic feature of southern Europe and its strong signal is still clearly visible up to high (satellite) altitudes. This magnetic anomaly is not completely explained until now and few previous studies pointed out the uplift of the magnetic basement toward NE as the main magnetic source of such anomaly. In this work we employed a multiscale analysis of the magnetic field over Adria plate in order to give a further contribution to the not extensive knowledge of such magnetic anomaly. Here we applied the Multiridge (Fedi et al. , 2009) and DEXP (Fedi, 2007) methods to a high-resolution magnetic dataset covering entirely the area of study.