A Rare Case of Grass Flow Induced by the M8.4 Arequipa Earthquake, June 2001, in the Altiplano of Northern Chile
Keyword(s):
AbstractOn June 23, 2001, an M8.4 earthquake that originated in southern Peru triggered the partial collapse of the Chislluma bofedal (water meadows) in the Altiplano (high-altitude plateau) of northern Chile. The seismic waves evidently produced the liquefaction of the bofedal and caused its partial collapse generating a flow. The flow deposit was mainly made of long-fiber grass and water, with minor amounts of clastic material. It traveled more than 14 km downstream at a peak velocity of 50 km/h. It destroyed the water meadows and killed more than 20 llamas. Slurry flows caused by meadow liquefaction are a previously unrecognized seismic-induced geological hazard for high-altitude plateau areas such as the Altiplano.
2010 ◽
Vol 26
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pp. 369-378
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2016 ◽
Vol 60
(4)
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pp. 356-358
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2020 ◽
Vol 117
(31)
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pp. 18169-18171
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2018 ◽
Vol 111
(9)
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pp. 1523-1533
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2009 ◽
Vol 114
(G2)
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pp. n/a-n/a
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