The VEI (Volcano Explosivity Index) rates volcanic eruptions based on the volume of ejected material, the height of the eruption plume, and the time duration of the event. The scale runs from 0 (low volume, non-explosive lava flow) to 8 (mega-colossal volcanic explosion, accompanied by seismic events and/or tsunamis). E.g. Mount St. Helens, 1980, had a VEI of 5. Mount Mazama (an exploded volcano that now forms Crater Lake) erupting around 5600 BC, had a VEI of 7.
The Richter scale which was invented in the 1930s by Dr. Charles Richter, a seismologist at the California Institute of Technology.
A composite volcano or Strata Volcano.
it was a neck of a volcano
Mount Fuji is a composite volcano.
mount etna is a volcano in italy
Volcanic Explosivity Index
Volcanoes are measured on the volcano explosivity index. See the link below for more information.
The Richter scale is applied to earthquakes, not volcanoes. The 1985 eruption was a VEI 3 on the Volcanic Explosivity Index.
Catastrophic eruption Volcanic Explosivity Index (VEI) = 6 - 7 Dense-rock equivalent (DRE) = 60 km3
Volcanic eruptions are classified on the Volcanic Explosivity index, which is based on parameters such as the amount of material erupted and the height of the eruption column.
this is the biggest volcano eruption in New zealand
Volcanic Explosivity INdex (VEI)
there isn't one
explosivity
Very. The reports of the blast in which Kraktoa was destroyed are almost beyond belief. And there were larger volcanic blasts in the distant past. Krakatoa was a 6 on the Volcanic Explosivity Index while Tambora was a 7. Need links? You got 'em.
Wikipedia lists its explosive index as 5. Read below for more details about the Volcanic Explosivity Index.
I don't know Stratovolcano