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Authors: Rizzo, A. L.*
Federico, C.*
Inguaggiato, S.*
Sollami, A.*
Tantillo, M.*
Vita, F.*
Bellomo, S.*
Longo, M.*
Grassa, F.*
Liuzzo, M.*
Title: The 2014 effusive eruption at Stromboli volcano (Italy): Inferences from soil CO2 flux and 3He/4He ratio in thermal waters
Title of journal: Geophysical Research Letters
Series/Report no.: /42 (2015)
Publisher: American Geophysical Union
Issue Date: 12-Apr-2015
DOI: 10.1002/2014GL062955
Keywords: Stromboli
soil CO2 flux
3He/4He ratio
thermal waters
Abstract: A new eruption started at Stromboli on August 6, 2014, which had been preceded by 2 months of increased Strombolian activity and several lava overflows from the craters. The eruption was characterized by a lava effusion in Sciara del Fuoco from a fracture at 650 m a.s.l. that lasted until November 13–17. Here we present the first geochemical observations of this eruption, based on the soil CO2 flux in the summit area, and on 3He/4He ratios in the thermal waters near Stromboli village. We infer that this eruption was triggered by the gradual replenishment of the feeding system by a CO2- and 3He-rich magma at the end of 2013 and after June 2014, suggested by the increase in 3He/4He ratio before eruption, which reached its highest value since 2007. We thus infer that this eruption was unusual and we finally speculate on the evolutionary scenario of post eruption.
Appears in Collections:04.08.01. Gases
04.08.06. Volcano monitoring
Papers Published / Papers in press

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