Marcello Bitetto

TL;DR: In this paper, a lava lake appeared inside the Santiago pit crater of Masaya volcano (Nicaragua) in December 2015, after years of degassing with no (or minor) incandescence.

TL;DR: In this paper, the authors present the first volcanic gas compositional time-series taken prior to a paroxysmal eruption of Villarrica volcano (Chile) and demonstrate a temporal evolution of volcanic plume composition, from low CO2/SO2 ratios (0.65-2.7) during November 2014-January 2015 to CO 2/SO 2 ratios up to ≈ 9 then after.

TL;DR: The first assessment of volatile fluxes from the hyperacid crater lake hosted within the summit crater of Copahue, a very active volcano on the Argentina-Chile border, was performed using a variety of in situ and remote sensing techniques during field campaigns in March 2013, when the crater hosted an active fumarole field, and in March 2014, when an acidic volcanic lake covered the fumaroles field as discussed by the authors.

TL;DR: In this article, the authors compare UAS-derived gas timeseries to simultaneous crater rim multi-GAS data and UV camera imagery to investigate early plume evolution, and observe good agreement between time-averaged molar gas ratios obtained from simultaneous UAS and ground-based multiGAS acquisitions, and conclude that UAS measurements made in the young, less diluted plume reveal additional short-term periodic structure that reflects active degassing through discrete, audible gas exhalations.

TL;DR: In this paper, a Multi-GAS instrument was used to continuously monitor gas concentrations in the plume released by the vigorously degassing crater lake of the northernmost active volcano in Costa Rica.