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Forecasting Etna eruptions by real-time observation of volcanic gas composition
Author(s)
Language
English
Obiettivo Specifico
3.6. Fisica del vulcanismo
Status
Published
JCR Journal
JCR Journal
Peer review journal
Yes
Title of the book
Issue/vol(year)
12 / 35 (2007)
Publisher
The Geological Society of America
Pages (printed)
1115-1118
Issued date
2007
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.
Type
article
File(s)
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G_Aiuppa_et al_2007.pdf
Size
178.07 KB
Format
Adobe PDF
Checksum (MD5)
7a391e09d019e0f9cd57b72394b7cacb