Figure 9
From: Infrasonic gliding reflects a rising magma column at Mount Etna (Italy)

(a) Magma ascent rate (m/hr) and (b) volumetric ascent rate (m3/hr) for the five infrasound stations with the best signal-to-noise ratio; (blue) ECPN, (red) EMFO, (yellow) EMFS, (purple) EMNR, and (green) ESLN. Colored boxes indicate different phases of the eruption: (yellow) weak Strombolian activity, (orange) strong Strombolian activity, (red) lava fountaining.