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Crater Peak (Mount Spurr), Alaska: Eruptions of 1992 |
Alaska has a number of active and potentially active volcanoes. More than one-half of the population of Alaska lives within 300 km of an active volcano. In the last 100 years there have been two eruptions at Mr. Spurr, three at Redoubt Volcano, and four eruptions at the Augustine Volcano. The 1989-1990 eruption of Redoubt Volcano resulted in 160 million dollars of damage and loss. This set follows the story of Crater Peak activity from June through October, 1992, and discusses precursors, the eruptions, and effects on the environment. |
View of Crater Peak and Mt. Spurr before eruption
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Warm lake within the Crater Peak basin prior to eruption
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Steam rising from the Crater Peak vent
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Damage to seismometer on Crater Peak by the June 27 eruption
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The ash column from the August 18 eruption
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Ash cloud rising off south flank of Crater Peak
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South flank of Crater Peak showing bomb impact craters
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New magma within the pyroclastic flow deposits
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Inflated gneiss ejected in 1992
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Successive pyroclastic avalanches
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Geologist near one of bomb craters on south flank of Crater Peak
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Fallout from tephra cloud deposited on the ground
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The inside of Crater Peak after the August eruption
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Fallout in Anchorage from the August 18 eruption cloud
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Ash on the ground in Anchorage becomes resuspended
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Clean-up at the Anchorage International Airport
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September eruption of Crater Peak
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Lahars from the September eruption
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The Crater Peak vent after the September eruption
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Plume of gas from Crater Peak as seen from Anchorage
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