Strombolian eruption

Strombolian eruptions are characterized by the intermittent explosion or fountaining of basaltic lava from a single vent or crater. Each episode is caused by the release of volcanic gases, and they typically occur every few minutes or so, sometimes rhythmically and sometimes irregularly.

Stromboli gave its name to this kind of eruption (Crater 1, October 1997). Photo: J. Alean