GNGTS 2024 - Atti del 42° Convegno Nazionale

Session 1.2 GNGTS 2024 Considering these fndings, an interpretatve source model for the recorded seismic patern was atempted. This model proposes a stck-slip mechanism as the origin of the impulsive signals, due to the interacton between exsolved gas bubbles, mud plugs, and the vent walls. Upon establishing a source model and proposing a dynamic relaton between gas emission and seismic signals, an efort was made to provide an indirect estmate of the surface gas outlow. The outcomes of this analysis are in line with direct measurements of the average gas outlow (CO 2 and CH 4 ) conducted in the investgated area by other Authors ( Sciarra et al., 2019 ). References Iverson, R. M., Dzurisin, D., Gardner, C. A., Gerlach, T. M., LaHusen, R. G., Lisowski, M., Vallance, J.; 2006: Dynamics of seismogenic volcanic extrusion at Mount St Helens in 2004-05 . Nature, 444, 439-443. Lupi, M., Ricci, B. S., Kenkel, J., Ricci, T., Fuchs, F., Miller, S. A., & Kemna, A.; 2016: Subsurface fuid distributon and possible seismic precursory signal at the Salse di Nirano mud volcanic feld, Italy . Geophys.J.Int., 204, 907-917. Sciarra, A., Cantucci, B., Ricci, T., Tamonaga, Y., & Mazzini, A.; 2019: Geochemical characterizaton of the Nirano mud volcano, Italy . Appl. Geochem., 102, 77-87. Corresponding author: nicolo.carfagna@student.unisi.it