Unusually large magmatic CO2 gas emissions prior to a basaltic paroxysm

Alessandro Aiuppa, Sergio Guerrieri, Gaetano Giudice, Marco Liuzzo, Filippo Mur, Tommaso Caltabiano, Alessandro Aiuppa, Giuseppe Salerno, Mike Burton

Research output: Contribution to journalArticlepeer-review

79 Citations (Scopus)

Abstract

The low-intensity activity of basaltic volcanoes is occasionally interrupted by short-lived but energetic explosions which, whilst frequently observed, are amongst the most enigmatic volcanic events in Nature. The combination of poorly understood and deep, challenging to measure, source processes make such events currently impossible to forecast. Here we report increases in quiescent degassing CO2 emissions (>10,000 t/day) prior to a powerful explosive event on Stromboli volcano on 15 March 2007. We interpret such large CO2 flux as being sourced by passive gas leakage from a deeply (>4 km) stored magma, whose depressurization, possibly caused by the onset of an effusive eruption on 28 February 2007, was the explosion trigger. Our observations suggest that continuous CO2 flux monitoring may allow anomalously large explosions to be accurately forecast at basaltic volcanoes.
Original languageEnglish
Pages (from-to)1-5
Number of pages5
JournalGeophysical Research Letters
Volume37
Publication statusPublished - 2010

All Science Journal Classification (ASJC) codes

  • Geophysics
  • General Earth and Planetary Sciences

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