The 2011–2012 summit activity of Mount Etna: Birth, growth and products of the new SE crater

Behncke, B.; Branca, Stefano; Corsaro, Rosa Anna; Beni, Emanuela De; Miraglia, L.; Proietti, Cristina

doi:10.1016/j.jvolgeores.2013.11.012

Cited by 152 publications

(212 citation statements)

References 29 publications

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“…Generally, all of the 2011-2013 lava fountain episodes from the NSEC showed generally similar main characteristics, with the height of the lava fountain reaching 300-1,000 m, ash columns reaching 5-9 km, and associated 4-6 km long lava flows descending the eastern flank of the volcano (i.e., Calvari et al, 2011;Behncke et al, 2014;De Beni et al, 2015). The average total DRE (density rock equivalent) volume of magma emitted during each of the 2011-2013 NSEC lava fountains, including both pyroclastic products and lava flows, was ∼ 2.5 × 10 6 m 3 per event (De Beni et al, 2015).…”

Section: Etna 2009-2017 Activitymentioning

confidence: 97%

Coupled Short- and Medium-Term Geophysical Signals at Etna Volcano: Using Deformation and Strain to Infer Magmatic Processes From 2009 to 2017

et al. 2018

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In active volcanoes a main challenge is to identify and characterize the dynamics of magmatic sources from deformation and strain data. This task is of primary importance in frequently eruptive volcanoes, such as Etna. After the main flank eruption of [2008][2009] and until 2017, Etna volcano was characterized by a lively eruptive activity of different phases. These comprised 44 lava fountain episodes from the New South East Crater (NSEC), two sequences of close episodes of lava fountains from the Voragine crater (VOR), as well as some periods of summit effusive activity with a more prolonged supply of lava flows. Several studies have described and modeled single lava fountains episodes of the NSEC and VOR, in particular through high precision data from borehole strain-meters. In this study, we broaden the analysis also considering the medium-term volcano recharging/discharging periods preceding/accompanying the different eruptive phases during 2009-2017 by constraining the source positions through deformation recorded by the permanent GPS network. Together with the modeling deduced from the strain-meter data we produce a more complete representation of the different sources that characterized the different periods both in the medium-term (i.e., the preparatory phases showing inflation and the eruptive phases showing deflation) and in the short-term (i.e., the fast discharge associated with eruptive events). Our modeling explains the pathway of magma from the intermediate-shallow plumbing system to the surface and highlights a clear separation between the inflation and the deflation source depths, coherently with petrological constraints on the spatio-temporal evolution of magma transfer and storage.

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Section: Etna 2009-2017 Activitymentioning

confidence: 97%

Coupled Short- and Medium-Term Geophysical Signals at Etna Volcano: Using Deformation and Strain to Infer Magmatic Processes From 2009 to 2017

et al. 2018

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“…The previous maps, compiled in 2005 and 2007, showed just a pit crater on the upper and middle eastern flank of SEC (Neri et al, 2008), which widened in the following years and up to 2010 giving rise to another cone on top and to a lava fan from its base (Behncke et al, 2014). The new survey presented here displays two cones, the SEC and NSEC, having almost the same elevation (3287 m and 3275 m a.s.l., respectively).…”

Section: Resultsmentioning

confidence: 45%

Topographic Maps of Mount Etna’s Summit Craters, updated to December 2015

et al. 2017

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New maps of the summit of Mount Etna volcano (1:5000-1:4000), derived from helicopter photogrammetry, thermal images and terrestrial laser scanner survey, are here presented. These maps indicate the main morpho-structural changes occurring during the powerful explosive and effusive eruptions involving the summit craters of Etna over the first two weeks of December 2015. The survey enabled identifying the proximal erupted volume (7.2 ± 0.14 × 10 6 m 3 ) and the size and location of the vent causing the powerful explosive activity inside the Central Crater. Our survey also outlines the growth of a recent (2011)(2012)(2013)(2014)(2015) summit cone on top of a former pit crater, named New SE-Crater. This new cone is by now comparable in size to the former SE-Crater. The shape and size of two small cinder cones that formed on the upper eastern flank of the summit zone in May-July 2014 are also shown. This approach can be used in fast and frequent monitoring of very active volcanoes. ARTICLE HISTORY

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“…The event ceased completely after about two hours. This was the first of a long and complex sequence of eruptive events that characterized the evolution and growth of the NSEC until 2015 [Behncke et al 2014, De Beni et al 2015.…”

Section: Eruptive Phenomena At Mt Etna During the Studied Periodmentioning

confidence: 99%

“…Etna and the most active one in the last thirty years [e.g., Behncke et al 2014]. This new vent, named New Southeast Crater (NSEC), appeared as a relatively small open pit emitting hot pressurised gas.…”

Section: Eruptive Phenomena At Mt Etna During the Studied Periodmentioning

confidence: 99%

Temporal analysis of d13C CO2 and CO2 efflux in soil gas emissions at Mt. Etna: a new tool for volcano monitoring

Giammanco

Krajnc²,

Kotnik³

et al. 2017

Annals of Geophysics

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The 2011–2012 summit activity of Mount Etna: Birth, growth and products of the new SE crater

Cited by 152 publications

References 29 publications

Coupled Short- and Medium-Term Geophysical Signals at Etna Volcano: Using Deformation and Strain to Infer Magmatic Processes From 2009 to 2017

Coupled Short- and Medium-Term Geophysical Signals at Etna Volcano: Using Deformation and Strain to Infer Magmatic Processes From 2009 to 2017

Topographic Maps of Mount Etna’s Summit Craters, updated to December 2015

Temporal analysis of d13C CO2 and CO2 efflux in soil gas emissions at Mt. Etna: a new tool for volcano monitoring

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