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

Alessandro Aiuppa, Mariano Valenza, Gaetano Giudice, Marco Liuzzo, Cinzia Federico, Alessandro Aiuppa, Paolo Papale, Sergio Gurrieri, Roberto Moretti, Hiroshi Shinohara

Research output: Contribution to journalArticlepeer-review

193 Citations (Scopus)

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.
Original languageEnglish
Pages (from-to)1115-1118
Number of pages4
JournalGeology
Volume35
Publication statusPublished - 2007

All Science Journal Classification (ASJC) codes

  • Geology

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