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#2
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04-23-2015, 10:57 AM
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Re: Volcano Calbuco Erupts in Chile
I live near Mt. Saint Helen's in the Pacific Northwest and the old timers here are always going on about how much damn ash was carried by the wind after the eruption in 1980. 18 miles is enough to keep you out of magma range, but those folks are in for some powdery days. Thanks for the vid |
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#3
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04-23-2015, 11:17 AM
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Re: Volcano Calbuco Erupts in Chile
http://en.wikipedia.org/wiki/1980_er...unt_St._Helens "Continuing east, St. Helens' ash fell in the western part of Yellowstone National Park by 10:15 p.m. and was seen on the ground in Denver, Colorado, the next day. In time ash fall from this eruption was reported as far away as Minnesota and Oklahoma, and some of the ash drifted around the globe within about 2 weeks. During the nine hours of vigorous eruptive activity, about 540,000,000 tons of ash fell over an area of more than 22,000 square miles (57,000 km2). The total volume of the ash before its compaction by rainfall was about 0.3 cubic miles (1.3 km3). The volume of the uncompacted ash is equivalent to about 0.05 cubic miles (210,000,000 m3) of solid rock, or about 7% of the amount of material that slid off in the debris avalanche. By around 5:30 p.m. on May 18, the vertical ash column declined in stature, but less severe outbursts continued through the next several days." |