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Descriptor English: Pyroclastic Flow
Descriptor Spanish: Flujo Piroclástico
Descriptor flujo piroclástico
Scope note: Flujo de fragmentos volcánicos sólidos de alta densidad, suspendidos en gas, que fluyen montaña abajo desde una chimenea volcánica (a velocidades de hasta 200 km por h.) que también puede desarrollarse a partir del derrumbamiento parcial de un cono de erupción vertical. Se subdivide, de acuerdo con la composición de los fragmentos y la naturaleza del flujo, en: flujo de cenizas, corriente incandescente, nube ardiente y flujo de piedra pómez. (Traducción libre: Material II - IDNDR, 1992).
Descriptor Portuguese: Nuvem Ardente
Descriptor French: Flux Pyroclastique
Entry term(s): Glowing Cloud
Nuee Ardent
Tree number(s): SP8.190.270.371.485.652
Scope note: High density flow of solid volcanic fragments suspended in gas which flows downslope from a volcanic vent (at speed up to 200 km/h) which may also develop from partial collapse of a vertical eruption cone, subdivided according to fragment composition and nature of flowage into: ash flow, glowing avalanche, nuee ardent, pumice flow (Material II - IDNDR, 1992)
Allowable Qualifiers: No qualifiers
DeCS ID: 34743
Unique ID: DDCS034743
Documents indexed in the Virtual Health Library (VHL): Click here to access the VHL documents
Pyroclastic Flow - Preferred
Concept UI FD00060628
Scope note High density flow of solid volcanic fragments suspended in gas which flows downslope from a volcanic vent (at speed up to 200 km/h) which may also develop from partial collapse of a vertical eruption cone, subdivided according to fragment composition and nature of flowage into: ash flow, glowing avalanche, nuee ardent, pumice flow (Material II - IDNDR, 1992)
Preferred term Pyroclastic Flow
Entry term(s) Glowing Cloud
Nuee Ardent



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