Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/11389| DC Field | Value | Language |
|---|---|---|
| dc.date.accessioned | 2018-03-21T13:43:30Z | en |
| dc.date.available | 2018-03-21T13:43:30Z | en |
| dc.date.issued | 2017-07-06 | en |
| dc.identifier.uri | http://hdl.handle.net/2122/11389 | en |
| dc.description.abstract | In December 2015, four violent explosive episodes from Mt. Etna’s oldest summit crater, the Voragine, produced eruptive columns extending up to 15 km a.s.l. and significant fallout of tephra up to a hundred km from the vent. A combined textural and compositional study was carried out on pyroclasts from three of the four tephra deposits sampled on the volcano at 6 to 14 km from the crater. Ash fractions (Φ = 1–2) were investigated because these grain sizes preserve the magma properties unmodified by post- emplacement processes. Results were used to identify processes occurring in the conduit during each single paroxysm and to understand how they evolve throughout the eruptive period. Results indicate that the magmatic column is strongly heterogeneous, mainly with respect to microlite, vescicle content and melt composition. During each episode, the heterogeneities can develop at time scales as short as a few tens of hours, and differences between distinct episodes indicate that the time scale for completely refilling the system and renewing magma is in the same order of magnitude. Our data also confirm that the number and shape of microlites, together with melt composition, have a strong control on rheological properties and fragmentation style. | en |
| dc.language.iso | English | en |
| dc.relation.ispartof | Nature Scientific Reports | en |
| dc.relation.ispartofseries | /7 (2017) | en |
| dc.rights | CC0 1.0 Universal | en |
| dc.rights.uri | http://creativecommons.org/publicdomain/zero/1.0/ | en |
| dc.subject | Etna | en |
| dc.subject | explosive eruption | en |
| dc.subject | volcanic ash | en |
| dc.subject | tephra fallout | en |
| dc.subject | textural features | en |
| dc.title | Magma dynamics within a basaltic conduit revealed by textural and compositional features of erupted ash: the December 2015 Mt. Etna paroxysms. | en |
| dc.type | article | en |
| dc.description.status | Published | en |
| dc.type.QualityControl | Peer-reviewed | en |
| dc.description.pagenumber | 4805 | en |
| dc.subject.INGV | 04.08. Volcanology | en |
| dc.identifier.doi | 10.1038/s41598-017-05065-x | en |
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Non-Arrhenian multicomponent melt viscosity: a model. Earth Planet Sc Lett 208, 337–349 (2003). 29. Vona, A., Romano, C., Dingwell, D. & Giordano, D. The rheology of crystal-bearing basaltic magmas from Stromboli and Etna. Geochim Cosmochim Acta 75, 3214–3236, doi:10.1016/j.gca.2014.04.007 (2011). 30. Cimarelli, C., Di Traglia, F. & Taddeucci, J. Basaltic scoria textures from a zoned conduit as precursors to violent Strombolian activity. Geology 38, 439–442 (2010). 31. Houghton, B. et al. The influence of conduit processes on changes in style of basaltic Plinian eruptions: Tarawera 1886 and Etna 122 BC. Journal of Volcanology and Geothermal Research 137, 1–14 (2004). 32. Sable, J. E., Houghton, B. F., del Carlo, P. & Coltelli, M. Changing conditions of magma ascent and fragmentation during the Etna 122 BC basaltic Plinian eruption: Evidence from clast microtextures. Journal of Volcanology and Geothermal Research 158, 333–354 (2006). 33. Lautze, N. C. & Houghton, B. F. Physical mingling of magma and complex eruption dynamics in the shallow conduit at Stromboli volcano, Italy. Geology 33, 425 (2005). 34. Pioli, L. et al. Explosive dynamics of violent Strombolian eruptions: The eruption of Paricutin Volcano 1943–1952 (Mexico). Earth Planet Sc Lett 271, 359–368 (2008). 35. D’Oriano, C., Cioni R., Bertagnini, A., Andronico, D. & Cole, P. D. Dynamics of ash-dominated eruptions at Vesuvius: the post-512 AD AS1a event. Bulletin of Volcanology 73, 699–715 (2011). | en |
| dc.description.obiettivoSpecifico | 5V. Dinamica dei processi eruttivi e post-eruttivi | en |
| dc.description.journalType | JCR Journal | en |
| dc.contributor.author | Pompilio, Massimo | en |
| dc.contributor.author | Bertagnini, Antonella | en |
| dc.contributor.author | Del Carlo, Paola | en |
| dc.contributor.author | Di Roberto, Alessio | en |
| dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Pisa, Pisa, Italia | en |
| dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Pisa, Pisa, Italia | en |
| dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Pisa, Pisa, Italia | en |
| dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Pisa, Pisa, Italia | en |
| item.openairetype | article | - |
| item.cerifentitytype | Publications | - |
| item.languageiso639-1 | en | - |
| item.grantfulltext | open | - |
| item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
| item.fulltext | With Fulltext | - |
| crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Pisa, Pisa, Italia | - |
| crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Pisa, Pisa, Italia | - |
| crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Pisa, Pisa, Italia | - |
| crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Pisa, Pisa, Italia | - |
| crisitem.author.orcid | 0000-0002-0742-0679 | - |
| crisitem.author.orcid | 0000-0003-4075-2242 | - |
| crisitem.author.orcid | 0000-0001-5506-4579 | - |
| crisitem.author.orcid | 0000-0003-1167-8290 | - |
| crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
| crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
| crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
| crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
| crisitem.classification.parent | 04. Solid Earth | - |
| crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
| crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
| crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
| crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
| Appears in Collections: | Article published / in press | |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| Pompilioetal2017.pdf | 2.74 MB | Adobe PDF | View/Open |
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