The most powerful plume in nature is volcanic plume, which is formed by ejection of mixture of pyroclasts and volcanic gases in to the air from volcanic vent.

• 世界上中最壮现的羽流现象是由爆炸性火山喷发的各种火山气体、细粒的火山喷发碎屑物所组成的火山喷发柱，也就是我们俗称的火山蘑菇云。