Slides of the July 22, 1980 eruption of Mount St. Helens. Skamania County, Washington. 1980.
Dates
Date Taken
1980-07-22
Summary
These slides of the July 22, 1980 eruption of Mount St. Helens were taken by Jim Vallance, who was in a U.S. Forest Service fixed wing aircraft and by Mike Doukas, Harry Glicken, and Rick Hoblitt who were in a U.S. Geological Survey helicopter. There were three major eruptive pulses on July 22, 1980. They begin at 17:14, 18:30 and 19:02 PDT. Slide no. 43 through no. 62 show the third eruptive pulse. this sequence was taken while moving clockwise from the west to the north side of the mountain at a distance of 7 to 10 miles and at an elevation of 17,000 feet. View of eruption at 19:03. Skamania County, Washington. (Photo by J. Vallance, USGS)
Summary
These slides of the July 22, 1980 eruption of Mount St. Helens were taken by Jim Vallance, who was in a U.S. Forest Service fixed wing aircraft and by Mike Doukas, Harry Glicken, and Rick Hoblitt who were in a U.S. Geological Survey helicopter. There were three major eruptive pulses on July 22, 1980. They begin at 17:14, 18:30 and 19:02 PDT. Slide no. 43 through no. 62 show the third eruptive pulse. this sequence was taken while moving clockwise from the west to the north side of the mountain at a distance of 7 to 10 miles and at an elevation of 17,000 feet. View of eruption at 19:03. Skamania County, Washington. (Photo by J. Vallance, USGS)
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Material Request Instructions
Available in the U.S. Geological Survey Denver Library Photographic Collection, Mount St. Helens Superset Collection, color transparencies (slides).
Rights
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