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prettygoodwordlahar (LAH-hahr) - (geol.) n., a volcanic mudflow composed of a slurry of pyroclastic material, rocky debris and water.
And the deposit left behind by such a flow. Lahar are dangerous, effectively the volcanic equivalent of flash floods, and can happen when an eruption comes up through a glacier or mountain lake. Here's one on the slopes of Mount St. Helens, deposited during an eruption on March 19, 1982:
Thanks, WikiMedia!
Word was first used in English by geologist Berend George Escher in 1922, taken from the Javanese name for it. And yes, this is a leftover from last week, one I couldn't find a pair for.
---L.
And the deposit left behind by such a flow. Lahar are dangerous, effectively the volcanic equivalent of flash floods, and can happen when an eruption comes up through a glacier or mountain lake. Here's one on the slopes of Mount St. Helens, deposited during an eruption on March 19, 1982:
Thanks, WikiMedia!
Word was first used in English by geologist Berend George Escher in 1922, taken from the Javanese name for it. And yes, this is a leftover from last week, one I couldn't find a pair for.
---L.
