What volcano has a VEI of 8?
Yellowstone eruption
1. Yellowstone eruption, 640,000 years ago (VEI 8)
Was there ever a VEI 8 eruption?
Yellowstone The most recent example of a super volcano eruption is the eruption of Taupo on New Zealand. It erupted about 26,500 years ago and produced 1170 cubic kilometers of tephra in a VEI 8 eruption. About 75,000 years ago, the eruption of Toba on Sumatra destroyed almost the entire human race.
How many VEI 8 volcanoes are there?
This would be a mass of uncompacted ejecta ten kilometers in length, ten kilometers in width and ten kilometers deep. Eruptions at Toba (74,000 years ago), Yellowstone (640,000 years ago), and Lake Taupo (26,500 years ago) are three of the 47 VEI 8 sites that have been identified.
What was the VEI of Mt St Helens?
Mount Pinatubo was later assigned a 6 on the VEI. You probably have read about the Richter scale when you studied earthquakes in science class….Volcanic Explosivity Index (VEI)
| VEI | 5 |
|---|---|
| Ejecta volume | > 1 km³ |
| Eruption Classification | Plinian |
| Description | Paroxysmal |
| Examples | Mount Vesuvius, Mount St. Helens (1980) |
What VEI was Mount St Helens?
5
The May 1980 eruption of Mount St. Helens rated a VEI of 5, but just barely; its lateral blast was powerful, but its output of magma was rather small. The VEI has been determined for more than 5,000 eruptions in the last 10,000 years.
How often do VEI 8 eruptions occur?
once in 50,000 years
About 40 eruptions of VEI-8 magnitude within the last 132 million years (Mya) have been identified, of which 30 occurred in the past 36 million years. Considering the estimated frequency is on the order of once in 50,000 years, there are likely many such eruptions in the last 132 Mya that are not yet known.
Is there a VEI 9 volcano?
According to the USGS, it is the largest known eruption since the Ordovician era, between 504 and 438 million years ago. It was so large, in fact, that in a 2004 report in the Bulletin of Volcanology, scientists recommended adding a ninth level to the VEI scale, and declared the La Garita eruption a magnitude 9.2.
Is VEI 7 A super-eruption?
The Campi Flegrei (Phlegraean Fields), west of Naples, is one of the most closely monitored volcanic areas in the world and is the only European volcanic area known to have experienced a super-eruption (VEI-7 /8).