火砕流
Meanings
1
pyroclastic flow
A fast-moving current of hot gas and volcanic matter that flows along the ground during an eruption. Used in geology and disaster reporting.
Pyroclastic flows can rush down at over 100 kilometers per hour.
The pyroclastic flows at Mount Unzen in 1991 caused many casualties.
Usage patterns
- 〈場所〉で火砕流が発生するfor a pyroclastic flow to occur at a location
A pyroclastic flow occurred near the crater.
- 火砕流に襲われるto be struck by a pyroclastic flow
The village was hit by a pyroclastic flow and completely destroyed.
- 火砕流が〈場所〉を下るfor a pyroclastic flow to rush down a slope
The pyroclastic flow swept down the mountainside all at once.