2006-10-06 11:32:23 · 4 answers · asked by STORMY K 3 in Science & Mathematics ➔ Earth Sciences & Geology
http://jersey.uoregon.edu/~mstrick/AskGeoMan/geoQuerry33.html
http://volcanoes.usgs.gov/Hazards/What/PF/pcflows.html
2006-10-06 11:41:54 · answer #1 · answered by tronary 7 · 0⤊ 0⤋
A pyroclastic flow occurs when the eruption column collapses, due to the diminishing of the upward pressure of the initial release and gravity pulls it back down.
2006-10-06 13:20:24 · answer #2 · answered by accrv 2 · 0⤊ 0⤋
a pyroclastic cloud is another name for a pyroclastic flow. a pyoclastic flow in technically an avalanche of boulders and rocks caused by an eruption.
2006-10-06 11:38:13 · answer #3 · answered by Drake ☮ 5 · 0⤊ 0⤋
Cloud of gas/ash/rock from volcano when it is erupting
There is also a slang form of the word as well here:
http://www.urbandictionary.com/define.php?term=Pyroclastic+Cloud
2006-10-06 11:37:05 · answer #4 · answered by Notu 2 · 0⤊ 0⤋