GNGTS 2016 - Atti del 35° Convegno Nazionale

GNGTS 2016 S essione 1.3 255 effect relationships. Both geophysical and geochemical anomalies are then complementary expressions of a general disequilibrium in the local geodynamic state. Both perturbations in the pressure state variable, or in the temperature distribution of the deep system, result in an excited state and produces heat and mass flows towards the surface of the multiphase system under investigation. What we suggest is to do the temperature monitoring of some selected sites and to merge the observed variations to comparable time series of different parameters from our geochemical subsystem (hydrogeological, atmospherical and geological data). Conclusions. Through an empirical approach we have compared different time series of data, in order to highlight surface variations related to the energy released by a buried system. The surface heat fluxes, derived by monitoring temperature profiles, are original data from these authors, and results were validated and verified by experimental procedures during a previous research project, partially funded by the National Department of Civil Protection. The other data considered for comparison came from the tables included in scientific papers, they were validated and accepted by editors, among the big amount of data acquired to follow and model Mt. Etna and the Aeolian Islands behavior. In conclusion, continuous monitoring of surface temperature makes it possible to follow with a high temporal resolution, and in real time, all of the episodic increases in pore pressure that occur in geothermal and volcanic systems. Further improvements in multiple-parameter approaches are necessary to reveal the mechanism underlying these variations, since heat and fluid release can be influenced not only by the change in input from magmatic sources but also by the geodynamic instability of the area. References Aubert M.; 1999: Practical evaluation of steady heat discharge from dormant active volcanoes: case study of Vulcarolo fissure (Mount Etna, Italy). Journal of Volcanology and Geothermal Research, 92, 413–429. Aubert M., Diliberto S., Finizola A., Chébli Y.; 2008: Double origin of hydrothermal convective flux variations in the Fossa of Vulcano (Italy) . Bull. Volcanol., Vol. 70, 743-751: DOI: 10.1007/s00445-007-0165-y. Behncke B, Branca S, Corsaro RA, De Beni E, Miraglia L, Proietti C.; 2014: The 2011 – 2012 summit activity of Mount Etna: birth, growth and products of the new SE crater. J Volcanol Geotherm Res 270:10–21. doi:10.1016/ j.jvolgeores.2013.11.012 Bombrun M, Spampinato L, Harris A, Barra V, Caltabiano T; 2016: On the transition from Strombolian to fountaining activity: a thermal energy-based driver Bull Volcanol (2016) 78:15 DOI 10.1007/s00445-016-1009-4 Bonaccorso A, Calvari S.; 2013: Major effusive eruptions and recent lava fountains: Balance between expected and erupted magma volumes at Etna volcano G. R. L., . 40, 6069–6073, doi:10.1002/2013GL058291, 2013 Cannata A., Diliberto I.S., Alparone S., Salvatore Gambino S., Gresta S., Liotta M., Madonia P., Milluzzo V., Aliotta M. , Montalto P.; 2012: Multiparametric Approach in Investigating Volcano-Hydrothermal Systems: the Case Study of Vulcano (Aeolian Islands, Italy). Pure and Applied Geophysics DOI: 10.1007/s00024-011-0297-z, 169 (1-2), 167-182 ISSN: 1420-9136. Diliberto I.S.; 2011: Long-term variations of fumarole temperatures on Vulcano Island (Italy) . Annals of Geophysics, 54 (2), 175-185. Diliberto I.S.; 2013: Time series analysis of high temperature fumaroles monitored on the island of Vulcano (Aeolian Archipelago, Italy). Journal of Volcanology and Geothermal Research Manuscript Number: doi: 10.1016/j.jvolg eores.2013.08.003. Hardee H.C.; 1982: Permeable convection above magma bodies. Tectonophysics 84:179–195. Madonia P., Cusano P., Diliberto I.S., Cangemi M.; 2013: Thermal anomalies in fumaroles at Vulcano island (Italy) and their relationship with seismic activity . Physics and Chemistry of the Earth, v.63, 160-169, DOI:10.1016/ JPCE.2013.06.001. Milluzzo V., Cannata A., Alparone S., Gambino S., Hellweg M., Montalto P., Cammarata L., Diliberto I.S., Gresta S., Liotta M., Paonita A.; 2010: Tornillos at Vulcano: Clues to the dynamics of the hydrothermal system . Journal of Volcanology and Geothermal Research, 198, 377–393.