strength is the Volcanic Explosivity Index, an order-of-magnitude scale, ranging from 0 to 8, that often correlates to eruptive types.

Mechanisms

Volcanic eruptions arise through three main mechanisms:
* Gas release under decompression, causing magmatic eruptions
* Ejection of entrained particles during steam eruptions, causing phreatic eruptions
* Thermal contraction from chilling on contact with water, causing phreatomagmatic

1.Previous
3.Next