The 79 eruption of Mount Vesuvius was estimated to have been a VEI 5.
The Richter scale measures earthquakes, not volcanic eruptions. Eruptions are rated on the Volcanic Explosive Index. On this scale, the 1991 eruption of Mount Pinatubo was a VEI 6.
The famous eruption of Mount st Helens in 1980 was a VEI-5.
The 1980 eruption of Mount St. Helens, a stratovolcano located in Washington state, in the United States, was a major volcanic eruption. It rated a 5 on the Volcanic Explosice Index, which rates volcanic eruptions from 1-10.
It did not have a Richter scale rating. The Richter scale is used to rate earthquakes, not volcanic eruptions. Volcanic eruptions are rated on the Volcanic Explosivity Index. The 1991 eruption of Mount Pinatubo was a VEI 6, described as a colossal eruption.
Volcanic eruptions don't go by the Richter Scale.. perhaps you are thinking of the VEI (Volcanic Explosivity Index) Scale? If so, the VEI of Mt. Lamington was a level 5.
there isn't one
It could stand for Volcanic Explosive Index. I describes the force of a volcanic explosion
Volcanic Explosivity INdex (VEI)
Volcanic Explotivity Index.... hope this helps!!
Volcanic Explosivity Index
No. "Category 5" is a rating on a system, used for hurricanes. Mount Pinatubo is a volcano. Volcanoes do not have a rating system but eruptions do: Volcanic Explosivity Index, which ranges from VEI 0 to VEI 8. On this scale the 1991 eruption of Mount Pinatubo was a VEI 6.
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.