Search results
Results from the WOW.Com Content Network
The volcanic explosivity index (VEI) is a scale used to measure the size of explosive volcanic eruptions. It was devised by Christopher G. Newhall of the United States Geological Survey and Stephen Self in 1982.
The volcanic explosivity index (commonly shortened to VEI) is a scale, from 0 to 8, for measuring the strength of eruptions but does not capture all of the properties that may be perceived to be important. It is used by the Smithsonian Institution's Global Volcanism Program in assessing the impact of historic and prehistoric lava flows.
Category: Volcanoes by highest known Volcanic Explosivity Index of eruption. ... VEI-2 volcanoes (11 P) VEI-3 volcanoes (1 C, 12 P) VEI-4 volcanoes (2 C, 39 P)
A supervolcano is a volcano that has had an eruption with a volcanic explosivity index (VEI) of 8, [1] the largest recorded value on the index. This means the volume of deposits for such an eruption is greater than 1,000 cubic kilometers (240 cubic miles). [2] Location of Yellowstone hotspot over time.
On 4 November 2024, the volcano spewed molten debris at several villages some 4 km (2.5 mi) away, destroying homes and killing at least nine. [74] The Centre of Volcanology and Geological Hazard Mitigation recommended that a 7 km (4.3 mi) radius around the volcano be evacuated. [75] Seven villages were affected by the eruption. [76]
Satellite images of the 15 January 2022 eruption of Hunga Tonga-Hunga Haʻapai. This is a list of volcanoes that have had large explosive eruptions during the Holocene (since about 11,650 years Before Present), with a volcanic explosivity index (VEI) of 5 or higher, or a plume height of at least 30 km.
In the criteria of Volcanic Explosivity Index, recognizing an eruption as ultra-Plinian would make it at least VEI-5 or higher. [ 9 ] The threshold for ultra-Plinian eruptions is defined by an eruptive column height of 45 km (28 mi), [ 10 ] or 41 km (25 mi) more recently. [ 11 ]
VEI Volcano/complex Volcanic arc/belt, subregion, or hotspot Material volume (km 3) Age in Ka [1] Tephra or eruption name 6 Lolobau Island: Bismarck Volcanic Arc 50 12 caldera formation 6 Menengai: Great Rift Valley, Kenya < 25 12.3 Ruplax Tuff 6 Nevado de Toluca: Trans-Mexican Volcanic Belt: 20 12.5 Upper Toluca Pumice 6 Sakurajima: Kyūshū ...