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- Volcanic_Explosivity_Index abstract "VEI redirects here. For the company, see Visual Entertainment Inc.The Volcanic Explosivity Index (VEI) was devised by Chris Newhall of the US Geological Survey and Stephen Self at the University of Hawaii in 1982 to provide a relative measure of the explosiveness of volcanic eruptions.Volume of products, eruption cloud height, and qualitative observations (using terms ranging from "gentle" to "mega-colossal") are used to determine the explosivity value. The scale is open-ended with the largest volcanoes in history given magnitude 8. A value of 0 is given for non-explosive eruptions, defined as less than 10,000 m3 (350,000 cu ft) of tephra ejected; and 8 representing a mega-colossal explosive eruption that can eject 1.0×1012 m3 (3.5×1013 cu ft) of tephra and have a cloud column height of over 50 km (31 mi). The scale is logarithmic, with each interval on the scale representing a tenfold increase in observed ejecta criteria, with the exception of between VEI 0, VEI 1 and VEI 2.Ash, lava, lava bombs and ignimbrite are all treated alike. Density and vesicularity (gas bubbling) of the volcanic products in question is not taken into account. In contrast, the DRE (Dense-Rock Equivalent) is sometimes calculated to give the actual amount of magma erupted. Another weakness of the VEI is that it does not take into account the power output of an eruption, which makes it extremely difficult to determine with prehistoric or unobserved eruptions.".
- Volcanic_Explosivity_Index thumbnail VEIfigure_en.svg?width=300.
- Volcanic_Explosivity_Index wikiPageExternalLink 0,13026,1294868,00.html.
- Volcanic_Explosivity_Index wikiPageExternalLink vei.php.
- Volcanic_Explosivity_Index wikiPageExternalLink v17amvu0unn4v7v4.
- Volcanic_Explosivity_Index wikiPageExternalLink largeeruptions.cfm.
- Volcanic_Explosivity_Index wikiPageID "32700".
- Volcanic_Explosivity_Index wikiPageRevisionID "604264849".
- Volcanic_Explosivity_Index hasPhotoCollection Volcanic_Explosivity_Index.
- Volcanic_Explosivity_Index subject Category:Hazard_scales.
- Volcanic_Explosivity_Index subject Category:Volcanology.
- Volcanic_Explosivity_Index type Abstraction100002137.
- Volcanic_Explosivity_Index type HazardScales.
- Volcanic_Explosivity_Index type Measure100033615.
- Volcanic_Explosivity_Index type Scale113850304.
- Volcanic_Explosivity_Index type Standard107260623.
- Volcanic_Explosivity_Index type SystemOfMeasurement113577171.
- Volcanic_Explosivity_Index comment "VEI redirects here. For the company, see Visual Entertainment Inc.The Volcanic Explosivity Index (VEI) was devised by Chris Newhall of the US Geological Survey and Stephen Self at the University of Hawaii in 1982 to provide a relative measure of the explosiveness of volcanic eruptions.Volume of products, eruption cloud height, and qualitative observations (using terms ranging from "gentle" to "mega-colossal") are used to determine the explosivity value.".
- Volcanic_Explosivity_Index label "Indeks Eksplozywności Wulkanicznej".
- Volcanic_Explosivity_Index label "Indice d'explosivité volcanique".
- Volcanic_Explosivity_Index label "Indice di esplosività vulcanica".
- Volcanic_Explosivity_Index label "Volcanic Explosivity Index".
- Volcanic_Explosivity_Index label "Vulkanexplosivitätsindex".
- Volcanic_Explosivity_Index label "Vulkanische-explosiviteitsindex".
- Volcanic_Explosivity_Index label "Índice de Explosividade Vulcânica".
- Volcanic_Explosivity_Index label "Índice de explosividad volcánica".
- Volcanic_Explosivity_Index label "Показатель вулканической эксплозивности".
- Volcanic_Explosivity_Index label "火山爆発指数".
- Volcanic_Explosivity_Index label "火山爆發指數".
- Volcanic_Explosivity_Index sameAs Vulkanexplosivitätsindex.
- Volcanic_Explosivity_Index sameAs Índice_de_explosividad_volcánica.
- Volcanic_Explosivity_Index sameAs Indice_d'explosivité_volcanique.
- Volcanic_Explosivity_Index sameAs Volcanic_Explosivity_Index.
- Volcanic_Explosivity_Index sameAs Indice_di_esplosività_vulcanica.
- Volcanic_Explosivity_Index sameAs 火山爆発指数.
- Volcanic_Explosivity_Index sameAs 화산_폭발_지수.
- Volcanic_Explosivity_Index sameAs Vulkanische-explosiviteitsindex.
- Volcanic_Explosivity_Index sameAs Indeks_Eksplozywności_Wulkanicznej.
- Volcanic_Explosivity_Index sameAs Índice_de_Explosividade_Vulcânica.
- Volcanic_Explosivity_Index sameAs m.080fp.
- Volcanic_Explosivity_Index sameAs Q210510.
- Volcanic_Explosivity_Index sameAs Q210510.
- Volcanic_Explosivity_Index sameAs Volcanic_Explosivity_Index.
- Volcanic_Explosivity_Index wasDerivedFrom Volcanic_Explosivity_Index?oldid=604264849.
- Volcanic_Explosivity_Index depiction VEIfigure_en.svg.
- Volcanic_Explosivity_Index isPrimaryTopicOf Volcanic_Explosivity_Index.