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Colata piroclastica
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fast-moving concentrated current of hot gas and volcanic matter that moves away from a volcano
A pyroclastic flow is a fast-moving current of extremely hot gas and volcanic material that rushes down the side of a volcano. It matters because these flows are among the most dangerous volcanic hazards, capable of destroying everything in their path at high speeds.
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- Pyroclastic flows at Mayon Volcano-2010-20-08.jpg
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- Pyroclastic flows
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- Pyroclastic flow
- different from
- pyroclastic surge
Sources (2)
via Wikidata · CC0
Article · Italiano
La colata piroclastica (o flusso piroclastico) è un flusso di materiale magmatico e gas ad alte temperature che scende dai fianchi di un vulcano grigio ad alta velocità. Nello specifico, può essere definita come una corrente bifasica, costituita da particelle solide (materiale juvenile, pomici, scorie e cristalli, e non juvenile, litici accessori ed accidentali), disperse in una fase gassosa (in prevalenza vapore d‘acqua e, in misura minore, biossido e monossido di carbonio).
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