Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/6648
DC Field | Value | Language |
---|---|---|
dc.contributor.authorall | Giordano, D.; Institut de Ciències de la Terra Jaume Almera (ICTJA), CSIC, Barcelona, Spain | en |
dc.contributor.authorall | Polacci, M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Pisa, Pisa, Italia | en |
dc.contributor.authorall | Papale, P.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Pisa, Pisa, Italia | en |
dc.contributor.authorall | Caricchi, L.; Institut des Sciences de la Terre d'Orleans, UMR 6113 CNRS – Universite d'Orleans, Orleans Cedex, France; now at: Department of Earth Sciences, University of Bristol, Bristol, UK | en |
dc.date.accessioned | 2011-01-14T08:10:14Z | en |
dc.date.available | 2011-01-14T08:10:14Z | en |
dc.date.issued | 2010 | en |
dc.identifier.uri | http://hdl.handle.net/2122/6648 | en |
dc.description.abstract | In the period from January to June 2000 Mt. Etna exhibited an exceptional explosive activity characterized by a succession of 64 Strombolian and fire-fountaining episodes from the summit South-East Crater. Textural analysis of the eruptive products reveals that the magma associated with the Strombolian phases had a much larger crystal content (>55 vol%) with respect to the magma discharged during the fire-fountain phases (~35 vol%). Rheological modelling shows that the crystal-rich magma falls in a region beyond a critical crystal content where small addition of solid particles causes an exponential increase of the effective magma viscosity. When implemented into the modeling of steady magma ascent dynamics (as assumed for the fire-fountain activity), a large crystal content as the one found for products of Strombolian eruption phases results in a one order of magnitude decrease of mass flow-rate, and in the onset of conditions where small heterogeneities in the solid fraction carried by the magma translate into highly unsteady eruption dynamics. We argue that crystallization on top of the magmatic column during the intermediate phases when magma was not discharged favoured conditions corresponding to Strombolian activity, with fire-fountain activity resuming after removal of the highly crystalline top. The numerical simulations also provide a consistent interpretation of the association between fire-fountain activity and emergence of lava flows from the crater flanks. | en |
dc.language.iso | English | en |
dc.publisher.name | Copernicus Publications | en |
dc.relation.ispartof | Solid Earth | en |
dc.relation.ispartofseries | 1/1(2010) | en |
dc.subject | Etna | en |
dc.subject | explosive activity | en |
dc.subject | scoria textures | en |
dc.subject | rheological properties | en |
dc.title | Rheological control on the dynamics of explosive activity in the 2000 summit eruption of Mt. Etna | en |
dc.type | article | en |
dc.description.status | Published | en |
dc.type.QualityControl | Peer-reviewed | en |
dc.description.pagenumber | 61-69 | en |
dc.identifier.URL | http://www.solid-earth.net/1/61/2010/se-1-61-2010.html | en |
dc.subject.INGV | 04. Solid Earth::04.08. Volcanology::04.08.03. Magmas | en |
dc.subject.INGV | 04. Solid Earth::04.08. Volcanology::04.08.05. Volcanic rocks | en |
dc.identifier.doi | 10.5194/se-1-61-2010 | en |
dc.description.obiettivoSpecifico | 3.6. Fisica del vulcanismo | en |
dc.description.journalType | N/A or not JCR | en |
dc.description.fulltext | open | en |
dc.contributor.author | Giordano, D. | en |
dc.contributor.author | Polacci, M. | en |
dc.contributor.author | Papale, P. | en |
dc.contributor.author | Caricchi, L. | en |
dc.contributor.department | Institut de Ciències de la Terra Jaume Almera (ICTJA), CSIC, Barcelona, Spain | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione Pisa, Pisa, Italia | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione Pisa, Pisa, Italia | en |
dc.contributor.department | Institut des Sciences de la Terre d'Orleans, UMR 6113 CNRS – Universite d'Orleans, Orleans Cedex, France; now at: Department of Earth Sciences, University of Bristol, Bristol, UK | 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 | Dipartimento di Scienze della Terra, Università di Torino | - |
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 | 0000-0003-1271-5516 | - |
crisitem.author.orcid | 0000-0003-3318-8700 | - |
crisitem.author.orcid | 0000-0002-5207-2124 | - |
crisitem.author.orcid | 0000-0001-9051-2621 | - |
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.classification.parent | 04. Solid Earth | - |
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 |
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File | Description | Size | Format | |
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SE_Giordano_etal_2010.pdf | 832.06 kB | Adobe PDF | View/Open |
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