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 discharg...

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Autores principales:	C. Ferlito, V. Bruno, G. Salerno, T. Caltabiano, D. Scandura, M. Mattia, M. Coltorti
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/75ec216f5a3e47038cfe222af705611e
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spelling	oai:doaj.org-article:75ec216f5a3e47038cfe222af705611e2021-12-02T15:06:10ZDome-like behaviour at Mt. Etna: The case of the 28 December 2014 South East Crater paroxysm10.1038/s41598-017-05318-92045-2322https://doaj.org/article/75ec216f5a3e47038cfe222af705611e2017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-05318-9https://doaj.org/toc/2045-2322Abstract 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 (dyke intrusion), but instead to a collapse of a portion of SEC, similar to what happens on exogenous andesitic domes. The sudden and fast discharge eventually triggered a depressurization in the shallow volcano plumbing system that drew up fresh magma from depth. Integration of data and observations has allowed to formulate a novel interpretation of mechanism leading volcanic activity at Mt. Etna and on basaltic volcanoes worldwide.C. FerlitoV. BrunoG. SalernoT. CaltabianoD. ScanduraM. MattiaM. ColtortiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-12 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q C. Ferlito V. Bruno G. Salerno T. Caltabiano D. Scandura M. Mattia M. Coltorti Dome-like behaviour at Mt. Etna: The case of the 28 December 2014 South East Crater paroxysm
description	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 (dyke intrusion), but instead to a collapse of a portion of SEC, similar to what happens on exogenous andesitic domes. The sudden and fast discharge eventually triggered a depressurization in the shallow volcano plumbing system that drew up fresh magma from depth. Integration of data and observations has allowed to formulate a novel interpretation of mechanism leading volcanic activity at Mt. Etna and on basaltic volcanoes worldwide.
format	article
author	C. Ferlito V. Bruno G. Salerno T. Caltabiano D. Scandura M. Mattia M. Coltorti
author_facet	C. Ferlito V. Bruno G. Salerno T. Caltabiano D. Scandura M. Mattia M. Coltorti
author_sort	C. Ferlito
title	Dome-like behaviour at Mt. Etna: The case of the 28 December 2014 South East Crater paroxysm
title_short	Dome-like behaviour at Mt. Etna: The case of the 28 December 2014 South East Crater paroxysm
title_full	Dome-like behaviour at Mt. Etna: The case of the 28 December 2014 South East Crater paroxysm
title_fullStr	Dome-like behaviour at Mt. Etna: The case of the 28 December 2014 South East Crater paroxysm
title_full_unstemmed	Dome-like behaviour at Mt. Etna: The case of the 28 December 2014 South East Crater paroxysm
title_sort	dome-like behaviour at mt. etna: the case of the 28 december 2014 south east crater paroxysm
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/75ec216f5a3e47038cfe222af705611e
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Dome-like behaviour at Mt. Etna: The case of the 28 December 2014 South East Crater paroxysm

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