noun
Vulcanian eruption
A type of volcanic eruption characterized by short, violent, cannon-like explosions of ash and volcanic bombs. Technical term used in volcanology.
ブルカノ式噴火は、火山弾や火山灰を激しく噴出する。
A Vulcanian eruption violently ejects volcanic bombs and ash.
Strombolian eruption: less explosive, with rhythmic bursts of lava. Contrasts with the more violent Vulcanian type.
From ブルカノ (Vulcano, the Italian island) + 式 (style/type) + 噴火 (eruption). Named after the Vulcano island, where such eruptions were first described.