Volcanic Explosivity Index

A 1970 photograph of a 30-foot-high (10 meters) lava fountain eruption from the Mauna Ulu vent of the Kilauea volcano on the Big Island of Hawaii.

1982: Understanding Volcanic Eruptions – The Volcanic Explosivity Index

The Volcanic Explosivity Index (VEI) categorizes volcanic eruptions based on their explosivity, aiding in understanding their potential impact on local communities and global climate