Publication Date:
2016-07-15
Description:
We report on a systematic record of SO 2 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 SO 2 flux time-series allow capturing shifts in activity from one vent to another, and contribute to our understanding of the Etna's shallow plumbing system structure. We find that the fissure eruption contributed ~50,000 tons of SO 2 , or ~30 % of the SO 2 emitted by the volcano during the July 5 th -August 10 th eruptive interval. Activity from this eruptive vent gradually vanished on August 10 th , marking a switch of degassing toward the NSEC. Onset of degassing at the NSEC was precursory to explosive paroxysmal activity on August 11 th -15 th .
Print ISSN:
0094-8276
Electronic ISSN:
1944-8007
Topics:
Geosciences
,
Physics
