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Index card: More distant aerial view, looking south, of crater and dome partially obscured by plumes from fumaroles. Skamania County, Washington. July 13, 1980. (Photo by M. Doukas). (Tip of plane wing visible at left edge of photo).
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Typed caption not available. Note: Slide numbers 43 - 50 were taken at 19:01 and show the pyroclastic flow as it advances northward. Skamania County, Washington. July 22, 1980. Slide number 51 was taken at 19:02. Slide numbers 52 - 55 were taken at 19:03. Slide numbers 56 - 57 were taken at 19:04. Slide numbers 58 and 59 were taken at 19:04 and 19:05. Slide numbers 60 - 62 are views of the eruption and were taken at 19:06. Slide no. 52, msh_vjw00052_ct, is highlighted in this photo record. Slide no. 52 typed caption: View of eruption at 19:03, the plume develops a mushroom-like head while the elutriate cloud from the pyroclastic flow billows up through the cloud layer. Skamania County, Washington. (Photo...
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Typed caption accompanying slide: 19:17 approximately; small pyroclastic flow advances short distance beyond ejecta rampart. Skamania County, Washington. (Photo by M. Doukas) Note: Slide numbers 43 - 50 were taken at 19:01 and show the pyroclastic flow as it advances northward. Skamania County, Washington. July 22, 1980. Slide number 51 was taken at 19:02. Slide numbers 52 - 55 were taken at 19:03. Slide numbers 56 - 57 were taken at 19:04. Slide numbers 58 and 59 were taken at 19:04 and 19:05. Slide numbers 60 - 62 are views of the eruption and were taken at 19:06. Slide no. 52, msh_vjw00052_ct, is highlighted in this photo record. Slide no. 52 typed caption: View of eruption at 19:03, the plume develops...
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Typed caption accompanying slide: 19:17 approximately; small pyroclastic flow advances short distance beyond ejecta rampart. Skamania County, Washington. (Photo by M. Doukas) Note: Slide numbers 43 - 50 were taken at 19:01 and show the pyroclastic flow as it advances northward. Skamania County, Washington. July 22, 1980. Slide number 51 was taken at 19:02. Slide numbers 52 - 55 were taken at 19:03. Slide numbers 56 - 57 were taken at 19:04. Slide numbers 58 and 59 were taken at 19:04 and 19:05. Slide numbers 60 - 62 are views of the eruption and were taken at 19:06. Slide no. 52, msh_vjw00052_ct, is highlighted in this photo record. Slide no. 52 typed caption: View of eruption at 19:03, the plume develops...
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Typed caption accompanying slides: View of crater from the north between the 1st and 2nd eruptive pulsees; note that the dome is still largely intact. Skamania County, Washington. (Photo by M. Doukas) Note: 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.
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Typed captin accompanying slides: View of crater from the north between the 1st and 2nd eruptive pulses; note that the dome is still largely intact. Skamania County, Washington. (Photo by M. Doukas) Note: Mount St. Helens - List of color transparencies (slides) of the July 2, 1980 eruption. The following slides (1-114) 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 began at 17:14, 18:30 and 19:02 PDT.
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Typed caption accompanying slide: 19:01 pyroclastic flow continues its advance as helicopter moves west. Skamania County, Washington. (Photo by M. Doukas) Note: Slide numbers 43 - 50 were taken at 19:01 and show the pyroclastic flow as it advances northward. Skamania County, Washington. July 22, 1980. Slide number 51 was taken at 19:02. Slide numbers 52 - 55 were taken at 19:03. Slide numbers 56 - 57 were taken at 19:04. Slide numbers 58 and 59 were taken at 19:04 and 19:05. Slide numbers 60 - 62 are views of the eruption and were taken at 19:06. Slide no. 52, msh_vjw00052_ct, is highlighted in this photo record. Slide no. 52 typed caption: View of eruption at 19:03, the plume develops a mushroom-like...
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These slides of the July 22, 1980 eruption of Mount St. Helens. Jim Vallance was in a U.S. Forest Service fixed wing aircraft and 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. 19:35 approximately; Don Swanson examines a new pyroclastic flow deposit. Skamania County, Washington. (Photo by M. Doukas, USGS)
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Slide description and index card: Aerial photographs of the lava dome that extruded into the crater of Mount St. Helens during the latter part of June 1980.The volcano's dacite lava has a pasty consistency when it is molten, and it tends to pile up rather than to flow laterally. This dome, which was largely destroyed in a subsequent eruption on July 22, 1980, was, at this stage, about 1,200 feet across and 200 feet high. Its rough, shattered appearance resulted mainly from the expansion and shattering of the solidified outer crust as more molten lava was forced upward by the great pressure in the magma chamber underlying the volcano. A, View through the amphitheater mouth from the northeast (direction of view same...
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Typed caption accompanying slide: 19:01 pyroclastic flow continues its advance as helicopter moves west. Skamania County, Washington. (Photo by M. Doukas) Note: Slide numbers 43 - 50 were taken at 19:01 and show the pyroclastic flow as it advances northward. Skamania County, Washington. July 22, 1980. Slide number 51 was taken at 19:02. Slide numbers 52 - 55 were taken at 19:03. Slide numbers 56 - 57 were taken at 19:04. Slide numbers 58 and 59 were taken at 19:04 and 19:05. Slide numbers 60 - 62 are views of the eruption and were taken at 19:06. Slide no. 52, msh_vjw00052_ct, is highlighted in this photo record. Slide no. 52 typed caption: View of eruption at 19:03, the plume develops a mushroom-like...


    map background search result map search result map View of Mount St. Helens crater with dome intact. Skamania County, Washington. 1980. Slides of the July 22, 1980 eruption of Mount St. Helens. Skamania County, Washington. 1980. More distant aerial view, looking south, of Mount St. Helens crater and dome partially obscured by plumes from fumaroles. Skamania County, Washington. 1980. Distant aerial view of Mount St. Helens and dome, looking south. Skamania County, Washington. 1980. Aerial view looking south showing dome and inner crater, rampart. Skamania County, Washington. 1980. Mount St. Helens, July 22, 1980 eruption. Skamania County, Washington. 1980. Aerial view through the amphitheater mouth of the lava dome that extruded into the crater of Mount St. Helens. Skamania County, Washington. 1980. View of Mount St. Helens dome and crater, looking south. Skamania County, Washington. 1981. Sequence of photographs show second eruptive pulse on July 22, 1980. Mount St. Helens, Skamania County, Washington. Sequence of photographs show second eruptive pulse on July 22, 1980. Mount St. Helens, Skamania County, Washington. Sequence of photographs show second eruptive pulse on July 22, 1980. Mount St. Helens, Skamania County, Washington. Sequence of photographs show second eruptive pulse on July 22, 1980. Mount St. Helens, Skamania County, Washington. Sequence of photographs show second eruptive pulse on July 22, 1980. Mount St. Helens, Skamania County, Washington. View of Mount St. Helens crater with dome intact. Skamania County, Washington. 1980. Slides of the July 22, 1980 eruption of Mount St. Helens. Skamania County, Washington. 1980. More distant aerial view, looking south, of Mount St. Helens crater and dome partially obscured by plumes from fumaroles. Skamania County, Washington. 1980. Distant aerial view of Mount St. Helens and dome, looking south. Skamania County, Washington. 1980. Aerial view looking south showing dome and inner crater, rampart. Skamania County, Washington. 1980. Mount St. Helens, July 22, 1980 eruption. Skamania County, Washington. 1980. Aerial view through the amphitheater mouth of the lava dome that extruded into the crater of Mount St. Helens. Skamania County, Washington. 1980. View of Mount St. Helens dome and crater, looking south. Skamania County, Washington. 1981. Sequence of photographs show second eruptive pulse on July 22, 1980. Mount St. Helens, Skamania County, Washington. Sequence of photographs show second eruptive pulse on July 22, 1980. Mount St. Helens, Skamania County, Washington. Sequence of photographs show second eruptive pulse on July 22, 1980. Mount St. Helens, Skamania County, Washington. Sequence of photographs show second eruptive pulse on July 22, 1980. Mount St. Helens, Skamania County, Washington. Sequence of photographs show second eruptive pulse on July 22, 1980. Mount St. Helens, Skamania County, Washington.