Periodic volcanic degassing behavior: The Mount Etna example

Researchers have uncovered rapid, periodic fluctuations in volcanic gas emissions from Mount Etna, representing the first observation of such behavior at high temporal resolution. Using a novel UV imaging technique sampling at 0.5 Hz, the study identified two distinct period bands—40–250 seconds and 500–1200 seconds—suggesting that these modulations may arise from periodic bursting of gas bubble trains at the magma-air interface. A correlation between gas flux fluctuations in the longer-period band and seismic activity further supports this hypothesis, offering new insights into the dynamics of volcanic degassing.

Tamburello, G., Aiuppa, A., McGonigle, A. J. S., Allard, P., Cannata, A., Giudice, G., Kantzas, E. P., & Pering, T. D. (2013). Periodic volcanic degassing behavior: The Mount Etna example. Geophysical Research Letters, 40(18), 4818–4822. Portico. https://doi.org/10.1002/grl.50924