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http://hdl.handle.net/2122/10538
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 | Journal: | Geophysical Research Letters | Series/Report no.: | /43 (2016) | Publisher: | American Geophysical Union | Issue Date: | 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 Classification: | 04. 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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