It is generally accepted but not experimentally proven that a quantitative prediction of volcanic eruptions is possible from the evaluation of volcanic gas data. By discussing the results of two years of real-time observation of H2O, CO2 and SO2 in volcanic gases from Mt. Etna volcano, we unambiguously demonstrate that increasing CO2/SO2 ratios can allow detecting the pre-eruptive degassing of uprising magmas. Quantitative modeling by the use of a saturation model allows us to relate the pre-eruptive increases of the CO2/SO2 ratio to the refilling of Etna’s shallow conduits with CO2-rich deep-reservoir magmas, leading to pressurization and eruption triggering. The advent of real-time observations of H2O, CO2 and SO2, combined with well-constrained models of degassing, represents a step forward in eruption forecasting. Keywords: Mount Etna, volcanoes, degassing, volatiles, gas plumes, volcanogenic processes.

AIUPPA, A., MORETTI, R., FEDERICO, C., GIUDICE, G., GURRIERI, S., LIUZZO, M., et al. (2007). Forecasting Etnean eruptions by real-time observations of volcanic gas composition. GEOLOGY, 35, 1115-1118 [10.1130/G24149A].

Forecasting Etnean eruptions by real-time observations of volcanic gas composition.

AIUPPA, Alessandro;VALENZA, Mariano
2007-01-01

Abstract

It is generally accepted but not experimentally proven that a quantitative prediction of volcanic eruptions is possible from the evaluation of volcanic gas data. By discussing the results of two years of real-time observation of H2O, CO2 and SO2 in volcanic gases from Mt. Etna volcano, we unambiguously demonstrate that increasing CO2/SO2 ratios can allow detecting the pre-eruptive degassing of uprising magmas. Quantitative modeling by the use of a saturation model allows us to relate the pre-eruptive increases of the CO2/SO2 ratio to the refilling of Etna’s shallow conduits with CO2-rich deep-reservoir magmas, leading to pressurization and eruption triggering. The advent of real-time observations of H2O, CO2 and SO2, combined with well-constrained models of degassing, represents a step forward in eruption forecasting. Keywords: Mount Etna, volcanoes, degassing, volatiles, gas plumes, volcanogenic processes.
2007
AIUPPA, A., MORETTI, R., FEDERICO, C., GIUDICE, G., GURRIERI, S., LIUZZO, M., et al. (2007). Forecasting Etnean eruptions by real-time observations of volcanic gas composition. GEOLOGY, 35, 1115-1118 [10.1130/G24149A].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/8643
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