VEI scale

The VEI (Volcanic Explosivity Index) is a scale that measures the size and explosiveness of volcanic eruptions. It ranges from 0 to 8, with higher numbers indicating more powerful eruptions. The scale considers factors like the amount of erupted material, the height of ash clouds, and the eruption's duration. For example, a small eruption with little ash and short duration might be a VEI 1, while a massive, catastrophic eruption with large ash plumes and widespread impact can reach VEI 7 or 8. This scale helps scientists compare eruptions and understand their potential impacts.