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Illustrated Volcano Glossary

Updated: May 19, 2022 13:06 GMT - Refresh

strombolian eruption

Strombolian eruptions from vents of Stromboli volcano, Eolian Islands, Italy
Strombolian eruptions from vents of Stromboli volcano, Eolian Islands, Italy
Strombolian eruption from Yasur volcano, Vanuatu
Strombolian eruption from Yasur volcano, Vanuatu
Strombolian eruptions are the smallest type of explosive eruptions. Strombolian eruptions consist of intermittent, generally relatively small explosions or weak pulsating fountains of fluid (usually basaltic) lava from a single vent or crater.
They are called so after the type locality of Stromboli volcano (Eolian Islands, Italy), which has been in strombolian activity for probably more than 2000 years.
An individual strombolian explosion is the result of sudden release of volcanic gasses. The typical rhythmic occurrence is caused by gradual accumulation of gas bubbles beneath a weakly solidified plug at the top of the magma column at the vent surface until the gas pressure is high enough to erupt through it, ejecting with it both solid and liquid spatter from the magma.

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