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Authors: Giovanetti, G.*
Monna, S.*
Lo Bue, N.*
Embriaco, D.*
Frugoni, F.*
Marinaro, G.*
De Caro, M.*
Sgroi, T*
Montuori, C.*
De Santis, A.*
Cianchini, G.*
Beranzoli, L.*
Favali, P.*
Title: Observing Volcanoes from the Seafloor in the Central Mediterranean Area
Title of journal: Remote Sensing
Series/Report no.: 4/8 (2016)
Publisher: MDPI
Issue Date: Apr-2016
DOI: 10.3390/rs8040298
Keywords: EMSO
volcanic ash clouds
seafloor observatories
stand-alone monitoring systems
volcano seismology
Abstract: The three volcanoes that are the object of this paper show different types of activity that are representative of the large variety of volcanism present in the Central Mediterranean area. Etna and Stromboli are sub-aerial volcanoes, with significant part of their structure under the sea, while the Marsili Seamount is submerged, and its activity is still open to debate. The study of these volcanoes can benefit from multi-parametric observations from the seafloor. Each volcano was studied with a different kind of observation system. Stromboli seismic recordings are acquired by means of a single Ocean Bottom Seismometer (OBS). From these data, it was possible to identify two different magma chambers at different depths. At Marsili Seamount, gravimetric and seismic signals are recorded by a battery-powered multi-disciplinary observatory (GEOSTAR). Gravimetric variations and seismic Short Duration Events (SDE) confirm the presence of hydrothermal activity. At the Etna observation site, seismic signals, water pressure, magnetic field and acoustic echo intensity are acquired in real-time thanks to a cabled multi-disciplinary observatory (NEMO-SN1 ). This observatory is one of the operative nodes of the European Multidisciplinary Seafloor and water-column Observatory (EMSO; research infrastructure. Through a multidisciplinary approach, we speculate about deep Etna sources and follow some significant events, such as volcanic ash diffusion in the seawater.
Appears in Collections:03.04.08. Instruments and techniques
04.08.07. Instruments and techniques
05.02.03. Volcanic eruptions
04.08.06. Volcano monitoring
Papers Published / Papers in press

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