Geochemical data for: Intense overpressurization at basaltic open-conduit volcanoes as inferred by geochemical signals: The case of the Mt. Etna December 2018 eruption

The reported dataset is annexed to the article “Intense overpressurization
at basaltic open-conduit volcanoes as inferred by geochemical signals: the
case of the Mt Etna December 2018 eruption”. It consists of five types of
parameters: soil CO2 flux from Mt Etna flanks, CO2/SO2 molar ratio of the
volcano plume, SO2 and HCl fluxes by volcano plume, and He isotope ratio
in some peripheral gas emissions, all of them recorded in the period
2017–2019. The data come from continuous monitoring networks installed on
Mt Etna and from discrete samplings carried out at specific sites, all the
monitoring facilities being supported by the INGV-Civil Defence joint
surveillance program.