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Authors: Coltelli, M.* 
Cavallaro, D.* 
Firetto Carlino, M.* 
Cocchi, L.* 
Muccini, F.* 
D'Aessandro, A.* 
Claude, M. E.* 
Monaco, C.* 
Ibáñez, J.* 
Zgur, F.* 
Patanè, D.* 
Carmisciano, C.* 
D'Anna, G.* 
Gonzales, M. T. P.* 
Teixido, T.* 
D'Anna, R.* 
Fertitta, G.* 
Passafiume, G.* 
Speciale, S.* 
Grassa, F.* 
Karageorgis, A* 
Sormani, L.* 
Facchin, L.* 
Visnovic, G.* 
Cotterle, D.* 
Blanos, R.* 
Mansutti, P.* 
Sulli, A.* 
Cultrera, F.* 
Carrion, F.* 
Rapisarda, S.* 
Title: The marine activities performed within the TOMO-ETNA experiment
Journal: Annals of Geophysics 
Series/Report no.: /59 (2016)
Issue Date: 2016
DOI: 10.4401/ag-7081
Keywords: Scientific cruise report
Marine geophysical data acquisition
Etna offshore
Ionian and Tyrrhenian Seas
Subject Classification04. Solid Earth::04.04. Geology::04.04.04. Marine geology 
Abstract: The TOMO-ETNA experiment was planned in order to obtain a detailed geological and structural model of the continental and oceanic crust beneath Mt. Etna volcano and northeastern Sicily up to the Aeolian Islands (southern Italy), by integrating data from active and passive refraction and reflection seismic methodologies, magnetic and gravity surveys. This paper focuses on the marine activities performed within the experiment, which have been carried out in the Ionian and Tyrrhenian Seas, during three multidisciplinary oceanographic cruises, involving three research vessels (“Sarmiento de Gamboa”, “Galatea” and “Aegaeo”) belonging to different countries and institutions. During the offshore surveys about 9700 air-gun shots were produced to achieve a high-resolution seismic tomography through the wide-angle seismic refraction method, covering a total of nearly 2650 km of shooting tracks. To register ground motion, 27 ocean bottom seismometers were deployed, extending the inland seismic permanent network of the Istituto Nazionale di Geofisica e Vulcanologia (INGV) and a temporary network installed for the experiment. A total of 1410 km of multi-channel seismic reflection profiles were acquired to image the subsurface of the area and to achieve a 2D velocity model for each profile. Multibeam sonar and sub bottom profiler data were also collected. Moreover, a total of 2020 km of magnetic and 680 km of gravity track lines were acquired to compile magnetic and gravity anomaly maps offshore Mt. Etna volcano. Here, high-resolution images of the seafloor, as well as sediment and rock samples, were also collected using a remotely operated vehicle.
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