Pyroclastic Flow 2
Pyroclastic Flow 2 :
Natural Disaster. "High density flow of solid volcanic fragments suspended in gas which flows downslope from a volcanic vent (at speeds up to 200 km/h) which may also develop from partial collapse of a vertical eruption cone, subdivided according to fragment composition and nature of flowage into: ash flow, glowing avalanche....., pumice flow". (UNDHA, DM Glossary, 1992, 60)
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