The 2014 effusive eruption at Stromboli volcano (Italy): Inferences from soil CO2 flux and 3He/4He ratio in thermal waters. Issue 7 (14th April 2015)

• Record Type: Journal Article
• Authors: Rizzo, Andrea Luca; Federico, Cinzia; Inguaggiato, Salvatore; Sollami, Aldo; Tantillo, Mariano; Vita, Fabio; Bellomo, Sergio; Longo, Manfredi; Grassa, Fausto; Liuzzo, Marco
• Is Part Of: Geophysical research letters. Volume 42:Issue 7(2015:Apr.)
• Page Start: 2235
• Page End: 2243
• Publication Date: 2015-04-14
• Subjects: Geophysics -- Periodicals; Planets -- Periodicals; Lunar geology -- Periodicals; 550
• DOI: 10.1002/2014GL062955
• Languages: English
• ISSNs: 0094-8276

Abstract

<abstract abstract-type="main"> <title>Abstract</title> <p>A new eruption started at Stromboli on 6 August 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 above sea level that lasted until 13–17 November. 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 posteruption.</p> </abstract>