Aerodynamics of stratovolcanoes during multiphase processes (Articolo in rivista)

Type
Label
  • Aerodynamics of stratovolcanoes during multiphase processes (Articolo in rivista) (literal)
Anno
  • 2012-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1029/2011JB008769 (literal)
Alternative label
  • Domenico M. Doronzo, Joan Martí, Roberto Sulpizio, Pierfrancesco Dellino (2012)
    Aerodynamics of stratovolcanoes during multiphase processes
    in Journal of geophysical research
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Domenico M. Doronzo, Joan Martí, Roberto Sulpizio, Pierfrancesco Dellino (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://www.agu.org/pubs/crossref/2012/2011JB008769.shtml (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 117 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 13 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • B01207 (literal)
Note
  • ISI Web of Science (WOS) (literal)
  • Google Scholar (literal)
  • Scopus (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, Georgia, USA Institute of Earth Sciences \"Jaume Almera,\" CSIC, Barcelona, Spain IDPA-CNR, Milan, Italy Centro Interdipartimentale di Ricerca sul Rischio Sismico e Vulcanico, Dipartimento di Scienze della Terra e Geoambientali, Università degli Studi di Bari, Bari, Italy (literal)
Titolo
  • Aerodynamics of stratovolcanoes during multiphase processes (literal)
Abstract
  • Pyroclastic density currents (PDCs) are gas-particle flows generated during explosive eruptions, which are often erupted over the flanks of stratovolcanoes. These volcanoes may have different shapes, which can affect the flow aerodynamics and hence the depositional processes. Here, multiphase numerical simulations are carried out in order to define semiquantitative relationships among the PDC behavior, particle response, and deposit formation. Three stratovolcano shapes are used: straight, convex and concave, and, by means of numerical simulations, their effects both on the flow structure and depositional processes are highlighted. The current starts moving as a homogeneous flow, and then it rapidly evolves to a turbulent boundary layer moving in contact with the ground, overlaid by a companion wake region. Results show that thin boundary layers produce thick deposits of massive layers, whereas thick boundary layers produce thin laminated deposits. Moreover, concave wake regions would produce thick massive deposits of fine ash, whereas convex wake regions would produce thin ash deposits. (literal)
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