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Authors: D'Aleo, R.* 
Bitetto, M.* 
Delle Donne, D.* 
Tamburello, G.* 
Battaglia, A.* 
Coltelli, M.* 
Patanè, D.* 
Prestifilippo, M.* 
Sciotto, M.* 
Aiuppa, A.* 
Title: Spatially resolved SO2 flux emissions from Mt Etna
Issue Date: 2016
Series/Report no.: /43 (2016)
DOI: 10.1002/2016GL069938
Keywords: Records of SO2 flux emissions from Etna’sindividualventsallowcapturing shifts in volcanic activity
Vent-resolved SO2 flux time series provide constraints on geometry of the shallow plumbing system
Vent-resolved SO2 flux time series demonstrate SO2 flux increase precursory to paroxysmal (lava fountaining) activity
Subject Classification04. Solid Earth::04.08. Volcanology::04.08.01. Gases 
Abstract: We report on a systematic record of SO2 flux emissions from individual vents of Etna volcano (Sicily), which we obtained using a permanent UV camera network. Observations were carried out in summer 2014, a period encompassing two eruptive episodes of the New South East Crater (NSEC) and a fissure-fed eruption in the upper Valle del Bove. We demonstrate that our vent-resolved SO2 flux time series allow capturing shifts in activity from one vent to another and contribute to our understanding of Etna’s shallowplumbingsystemstructure.We findthatthe fissureeruptioncontributed~50,000tofSO2 or~30%of the SO2 emitted by the volcano during the 5 July to 10 August eruptive interval. Activity from this eruptive ventgraduallyvanishedon10August,markingaswitchofdegassingtowardtheNSEC.Onsetofdegassingat the NSEC was a precursory to explosive paroxysmal activity on 11–15 August.
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