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Debris Flow

OPB | Feb. 1, 1996 7:30 p.m.

Oregon’s volcanoes have a history of catastrophic eruptions. One effect of an eruption is a debris flow, which is like a flash flood of ash and debris as thick as wet cement. Since the eruption of Mount St. Helens in 1980, scientists have been studying this phenomenon more closely.

First Broadcast: 1996
Producer: Jim Newman

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