GNGTS 2023 - Atti del 41° Convegno Nazionale

Session 1.2 - POSTER GNGTS 2023 lower resolution (Supper et al., 2004; De Ritis et al., 2005; Okuma et al., 2006; Blanco-Montenegro et al., 2007; Napoli and Currenti, 2016). The total magnetic field shows negative values to the south-west and positive values to the north-east, outlining a large-scale anomaly extended in NW-SE direction (Fig. 2, right). This arrangement is in agreement with the position and the direction of the anomaly suggested by Bruno and Castiello (2009). Moreover, a small-scale, bipolar anomaly characterizes the central part of the surveyed area, and is ascribable to a shallower and more localized feature. For the Spiaggia di Levante area we present both the magnetic anomaly map and the thermal map (Fig. 2). The magnetic map shows generally negative values, with a positive gradient moving northwards. This arrangement is in agreement with the other magnetic investigations and corresponds to the transition from the beach deposits to the volcanic rocks constituting the Vulcanello cone. A small-scale positive anomaly marks the southern part of the area and corresponds to the position of the thermal anomaly. This is exactly the site where is located the main part of the fumarole field. The results coming from the magnetic technique, and also the integration with thermal imaging, provide useful information to characterize various multi-scale features of this volcanic island. The results presented are only preliminary: more accurate processing and elaboration will represent the base for the modelling of the magnetic data and therefore they will be crucial to verify the hypothesis of the fault zone running at the base of the main cone. Acknowledgements The authors thank Vincenzo Sapia (Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2) who provided the magnetometer and supported the field activities. References Aiuppa A., Bitetto M., Calabrese S., Delle Donne D., Lages J., La Monica F. P., ... and Pistolesi M. (2022). Mafic magma feeds degassing unrest at Vulcano Island, Italy. Communications Earth & Environment, 3(1), 1-15. Alparone S., Cannata A., Gambino S., Gresta S., Milluzzo, V. and Montalto P.; 2010: Time-space variation of volcano-seismic events at La Fossa (Vulcano, Aeolian Islands, Italy): new insights into seismic sources in a hydrothermal system. Bulletin of Volcanology, 72(7), pp. 803-816. Barde-Cabusson S., Finizola A., Revil A., Ricci T., Piscitelli S., Rizzo E., Angeletti B., Balasco M., Bennati L., Byrdina S., Carzaniga N., Crespy A., Di Gangi F., Morin J., Perrone A., Rossi M., Roulleau E., Suski B. and Villeneuve N.; 2009: New geological insights and structural control on fluid