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Authors: Aiuppa, A.*
Burton, M.* 
Caltabiano, T.* 
Giudice, G.* 
Gurrieri, S.* 
Liuzzo, M.* 
Murè, F.* 
Salerno, G.* 
Title: Unusually large magmatic CO2 gas emissions prior to a basaltic paroxysm
Issue Date: 2010
Series/Report no.: /37 (2010)
DOI: 10.1029/2010GL043837
Keywords: CO2, UV scanner, Stromboli
Subject Classification04. Solid Earth::04.08. Volcanology::04.08.01. Gases 
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.
Description: An edited version of this paper was published by AGU. Copyright (2010) American Geophysical Union.
Appears in Collections:Papers Published / Papers in press

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