Dome-like behaviour at Mt. Etna: The case of the 28 December 2014 South East Crater paroxysm.

ABSTRACT: On the 28 December 2014, a violent and short paroxysmal eruption occurred at the South East Crater (SEC) of Mount Etna that led to the formation of huge niches on the SW and NE flanks of the SEC edifice from which a volume of ~3 × 10⁶ m³ of lava was erupted. Two basaltic lava flows discharged at a rate of ~370 m³/s, reaching a maximum distance of ~5 km. The seismicity during the event was scarce and the eruption was not preceded by any notable ground deformation, which instead was dramatic during and immediately after the event. The SO₂ flux associated with the eruption was relatively low and even decreased few days before. Observations suggest that the paroxysm was not related to the ascent of volatile-rich fresh magma from a deep reservoir (dyk

SUBMITTER: Ferlito C 

PROVIDER: S-EPMC5509668 | biostudies-literature | 2017 Jul

REPOSITORIES: biostudies-literature