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Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/2966

Authors: Aiuppa, A.*
Moretti, R.*
Federico, C.*
Giudice, G.*
Gurrieri, S.*
Liuzzo, M.*
Papale, P.*
Shinohara, H.*
Valenza, M.*
Title: Forecasting Etna eruptions by real-time observation of volcanic gas composition
Title of journal: Geology
Series/Report no.: 12 / 35 (2007)
Publisher: The Geological Society of America
Issue Date: 2007
DOI: 10.1130/G24149A.1
Keywords: degassing
volatiles
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 Mount Etna volcano, we unambiguously demonstrate that increasing CO2/SO2 ratios can allow detection of the pre-eruptive degassing of rising 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 triggering of eruption. 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.
Appears in Collections:04.08.01. Gases
Papers Published / Papers in press

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