Filters: Tags: Mount St. Helens July 22, 1980 (X)
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Typed caption accompanying slides: 19:18:25 new pyroclastic flow deposits from third eruptive pulse cover crater floor. Skamania County, Washington. (Photo by R. Hoblitt). Index card (nos. 1ct-98ct): Series of essentially time lapse photographs recording the three major eruptive pulses that began at 17:14 hours, 18:30 hours, and 19:02 hours Pacific Daylight Savings Time, July 22, 1980. Photographs were taken by Jim Vallance in a fixed wing aircraft, Michael P. "Mike" Doukas, Harry Glicken, and Richard P. "Rick" Hoblitt in a helicopter. Skamania County, Washington. (Complete captions on file). Note: Mount St. Helens - List of color transparencies (slides) of the July 22, 1980 eruption. The following slides (1-114)...
Typed caption accompanying slides and index card: Scenic view, at 20:54 hours (PDT), looking northeast at ash plume at dusk. Skamania County, Washington. (Photo by Richard P. Hoblitt). Note: Mount St. Helens - List of color transparencies (slides) of the July 22, 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.
Typed caption accompanying slides: 19:01 pyroclastic flow continues to develop, ash fountain increases. Skamania County, Washington. (Photo by R. Hoblitt). Index card (nos. 1ct-98ct): Series of essentially time lapse photographs recording the three major eruptive pulses that began at 17:14 hours, 18:30 hours, and 19:02 hours Pacific Daylight Savings Time, July 22, 1980. Photographs were taken by Jim Vallance in a fixed wing aircraft, Michael P. "Mike" Doukas, Harry Glicken, and Richard P. "Rick" Hoblitt in a helicopter. Skamania County, Washington. (Complete captions on file). Note: Mount St. Helens - List of color transparencies (slides) of the July 22, 1980 eruption. The following slides (1-114) of the July...
Typed caption accompanying slides: 19:00:59 start of third eruptive pulse and first indication of pyroclastic flow appears over rampart. Pyroclastic flow develops from ash fountain. Skamania County, Washington. (Photo by R. Hoblitt). Index card (nos. 1ct-98ct): Series of essentially time lapse photographs recording the three major eruptive pulses that began at 17:14 hours, 18:30 hours, and 19:02 hours Pacific Daylight Savings Time, July 22, 1980. Photographs were taken by Jim Vallance in a fixed wing aircraft, Michael P. "Mike" Doukas, Harry Glicken, and Richard P. "Rick" Hoblitt in a helicopter. Skamania County, Washington. (Complete captions on file). Note: Mount St. Helens - List of color transparencies (slides)...
Typed caption accompanying slides and index card: Scenic view, at 20:59:49 hours (PDT), declining eruptive activity at dusk. Skamania County, Washington. (Photo by Richard P. Hoblitt). Note: Mount St. Helens - List of color transparencies (slides) of the July 22, 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.
Typed caption accompanying slides: 18:59 following second eruptive pulse the dome has either been destroyed or buried by ejecta. (Photo by R. Hoblitt). Index card (nos. 1ct-98ct): Series of essentially time lapse photographs recording the three major eruptive pulses that began at 17:14 hours, 18:30 hours, and 19:02 hours Pacific Daylight Savings Time, July 22, 1980. Photographs were taken by Jim Vallance in a fixed wing aircraft, Michael P. "Mike" Doukas, Harry Glicken, and Richard P. "Rick" Hoblitt in a helicopter. Skamania County, Washington. (Complete captions on file). Note: Mount St. Helens - List of color transparencies (slides) of the July 22, 1980 eruption. The following slides (1-114) of the July 22,...
Typed caption accompanying slides: 19:23:22 eruption plume originates at former site of dome. Skamania County, Washington. (Photo by R. Hoblitt). Index card (nos. 1ct-98ct): Series of essentially time lapse photographs recording the three major eruptive pulses that began at 17:14 hours, 18:30 hours, and 19:02 hours Pacific Daylight Savings Time, July 22, 1980. Photographs were taken by Jim Vallance in a fixed wing aircraft, Michael P. "Mike" Doukas, Harry Glicken, and Richard P. "Rick" Hoblitt in a helicopter. Skamania County, Washington. (Complete captions on file). Note: Mount St. Helens - List of color transparencies (slides) of the July 22, 1980 eruption. The following slides (1-114) of the July 22, 1980...
Typed caption accompanying slides and index card: 21:10:17 moon rising over Mount Saint Helens in eruption. Skamania County, Washington. (Photo by Richard P. Hoblitt). Note: Mount St. Helens - List of color transparencies (slides) of the July 22, 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.
Typed caption accompanying slides: 19:01 pyroclastic flow continues to develop, ash fountain increases. Skamania County, Washington. (Photo by R. Hoblitt). Index card (nos. 1ct-98ct): Series of essentially time lapse photographs recording the three major eruptive pulses that began at 17:14 hours, 18:30 hours, and 19:02 hours Pacific Daylight Savings Time, July 22, 1980. Photographs were taken by Jim Vallance in a fixed wing aircraft, Michael P. "Mike" Doukas, Harry Glicken, and Richard P. "Rick" Hoblitt in a helicopter. Skamania County, Washington. (Complete captions on file). Note: Mount St. Helens - List of color transparencies (slides) of the July 22, 1980 eruption. The following slides (1-114) of the July...
Typed caption accompanying slides and index card: 19:34:40 hours Donald A. Swanson samples new pyroclastic flow deposit. Skamania County, Washington. (Photo by Richard P. Hoblitt). Note: Mount St. Helens - List of color transparencies (slides) of the July 22, 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.
Typed caption accompanying slides and index card: Scenic view, at 20:51:12 hours (PDT), of ash plume drifting to northeast as sun sets. Skamania County, Washington. (Photo by Richard P. Hoblitt). Note: Mount St. Helens - List of color transparencies (slides) of the July 22, 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.
Typed caption accompanying slides and index card: 19:33:28 hours, toes of new pyroclastic flow deposits northwest of crater; note ash cloud deposits on lee side of flow deposits. Skamania County, Washington. (Photo by Richard P. Hoblitt). Note: Mount St. Helens - List of color transparencies (slides) of the July 22, 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.
Typed caption accompanying slides: 19:23:27 crater and plume. Skamania County, Washington. (Photo by R. Hoblitt). Index card (nos. 1ct-98ct): Series of essentially time lapse photographs recording the three major eruptive pulses that began at 17:14 hours, 18:30 hours, and 19:02 hours Pacific Daylight Savings Time, July 22, 1980. Photographs were taken by Jim Vallance in a fixed wing aircraft, Michael P. "Mike" Doukas, Harry Glicken, and Richard P. "Rick" Hoblitt in a helicopter. Skamania County, Washington. (Complete captions on file). Note: Mount St. Helens - List of color transparencies (slides) of the July 22, 1980 eruption. The following slides (1-114) of the July 22, 1980 eruption of Mount St. Helens were...
Typed caption accompanying slides and index card: 19:48:10 hours helicopter inspects crater. Skamania County, Washington. (Photo by Richard P. Hoblitt). Note: Mount St. Helens - List of color transparencies (slides) of the July 22, 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.
Typed caption accompanying slides and index card: Scenic view, at 20:55:10 hours (PDT), of Mount Saint Helens seen from north at dusk, moon in the background. Skamania County, Washington. (Photo by R. Hoblitt). Note: Mount St. Helens - List of color transparencies (slides) of the July 22, 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.
Typed caption accompanying slides: 19:26:46 crater and plume. Skamania County, Washington. (Photo by R. Hoblitt). Index card (nos. 1ct-98ct): Series of essentially time lapse photographs recording the three major eruptive pulses that began at 17:14 hours, 18:30 hours, and 19:02 hours Pacific Daylight Savings Time, July 22, 1980. Photographs were taken by Jim Vallance in a fixed wing aircraft, Michael P. "Mike" Doukas, Harry Glicken, and Richard P. "Rick" Hoblitt in a helicopter. Skamania County, Washington. (Complete captions on file). Note: Mount St. Helens - List of color transparencies (slides) of the July 22, 1980 eruption. The following slides (1-114) of the July 22, 1980 eruption of Mount St. Helens were...
Typed caption accompanying slides and index card: Scenic view, at 20:54:11 hours (PDT), ash plume detail at dusk. Skamania County, Washington. (Photo by R. Hoblitt). Note: Mount St. Helens - List of color transparencies (slides) of the July 22, 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.
Typed caption accompanying slides: 19:16:48 eruption plume of third pulse rises in clockwise helix. Skamania County, Washington. (Photo by R. Hoblitt). Index card (nos. 1ct-98ct): Series of essentially time lapse photographs recording the three major eruptive pulses that began at 17:14 hours, 18:30 hours, and 19:02 hours Pacific Daylight Savings Time, July 22, 1980. Photographs were taken by Jim Vallance in a fixed wing aircraft, Michael P. "Mike" Doukas, Harry Glicken, and Richard P. "Rick" Hoblitt in a helicopter. Skamania County, Washington. (Complete captions on file). Note: Mount St. Helens - List of color transparencies (slides) of the July 22, 1980 eruption. The following slides (1-114) of the July 22,...
Typed caption accompanying slides: 19:16:52 eruption plume of third pulse rises in clockwise helix as ash curtains fall from it. Skamania County, Washington. (Photo by R. Hoblitt). Index card (nos. 1ct-98ct): Series of essentially time lapse photographs recording the three major eruptive pulses that began at 17:14 hours, 18:30 hours, and 19:02 hours Pacific Daylight Savings Time, July 22, 1980. Photographs were taken by Jim Vallance in a fixed wing aircraft, Michael P. "Mike" Doukas, Harry Glicken, and Richard P. "Rick" Hoblitt in a helicopter. Skamania County, Washington. (Complete captions on file). Note: Mount St. Helens - List of color transparencies (slides) of the July 22, 1980 eruption. The following...
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