Dictionary
Words, grammatical forms and meanings linked to the ontology.
pyroclastic density current en · NOUN
Meanings
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a pyroclastic flow; a gas-rich, hot, dense, ground-hugging torrent of ash, lapilli, and volcanic blocks that results from the gravitational collapse of a volcanic eruption column, associated with explosive plinian and ultraplinian volcanic eruptions, and which produces a type of volcaniclastic deposit called an ash-flow tuff or an ignimbrite.
Forms
Synonyms
pyroclastic surge · PDC · pyroclastic flow