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Sequence of photographs show second eruptive pulse on July 22, 1980. Mount St. Helens, Skamania County, Washington. Typed caption accompanying slide: Stereopair with slide no. 64 taken at 19:11. The plume encounters an atmospheric boundary and is planed off into an anvil shape at about 60,000 feet. Skamania County, Washington. (Photo by J. Vallance) 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.... Categories: Image; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Mount St. Helens Collection, Photographers, Skamania County, Washington, Vallance, J.W. Collection, Volcanoes, All tags... aerial, color transparency (slides), Fewer tags These slides of the July 22, 1980 eruption of Mount St. Helens. Skamania County, Washington. 1980. 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. Slides no. 5 through 25 were taken between 18:25:20 and 18:26:30 This sequence was taken while moving counter-clockwise from the north to the west flank of Mount St. Helens at a distance of about 7 miles and while changing elevation from about 10,000 to 12,000 feet. Approximate 3 seconds after slide no. 14. (Wing of aircraft visible). Skamania County, Washington. (Photo by J.... Categories: Image; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Mount St. Helens Collection, Photographers, Skamania County, Washington, Vallance, J.W. Collection, Volcanoes, All tags... aerial, color transparency (slides), Fewer tags Sequence of photographs show second eruptive pulse on July 22, 1980. Mount St. Helens, Skamania County, Washington. 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... Categories: Image; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Mount St. Helens Collection, Photographers, Skamania County, Washington, Vallance, J.W. Collection, Volcanoes, All tags... aerial, color transparency (slides), Fewer tags Slides of the July 22, 1980 eruption of Mount St. Helens. Skamania County, Washington. 1980. 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. Slides no. 5 through 25 were taken between 18:25:20 and 18:26:30 This sequence was taken while moving counter-clockwise from the north to the west flank of Mount St. Helens at a distance of about 7 miles and while changing elevation from about 10,000 to 12,000 feet. Approximately 3 seconds after slide no. 20. Skamania County, Washington. (Photo by J. Vallance, USGS) View of... Categories: Image; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Mount St. Helens Collection, Photographers, Skamania County, Washington, Vallance, J.W. Collection, Volcanoes, All tags... aerial, color transparency (slides), Fewer tags Slides of the July 22, 1980 eruption of Mount St. Helens. Skamania County, Washington. 1980. 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) Categories: Image; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Mount St. Helens Collection, Photographers, Skamania County, Washington, Vallance, J.W. Collection, Volcanoes, All tags... aerial, color transparency (slides), Fewer tags Slides of the July 22, 1980 eruption of Mount St. Helens. Skamania County, Washington. 1980. 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. Slides no. 5 through 25 were taken between 18:25:20 and 18:26:30 This sequence was taken while moving counter-clockwise from the north to the west flank of Mount St. Helens at a distance of about 7 miles and while changing elevation from about 10,000 to 12,000 feet. Approximately 3 seconds after slide no. 20. Skamania County, Washington. (Photo by J. Vallance, USGS) 18:26:14. Categories: Image; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Mount St. Helens Collection, Photographers, Skamania County, Washington, Vallance, J.W. Collection, Volcanoes, All tags... aerial, color transparency (slides), Fewer tags Slides of the July 22, 1980 eruption of Mount St. Helens. Skamania County, Washington. 1980. 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. 20:53 Mount St. Helens from the west; moderating activity at sunset. Skamania County, Washington. (Photo by J. Vallance, USGS) Categories: Image; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Mount St. Helens Collection, Photographers, Skamania County, Washington, Vallance, J.W. Collection, Volcanoes, All tags... aerial, color transparency (slides), Fewer tags These slides of the July 22, 1980 eruption of Mount St. Helens. Skamania County, Washington. 1980. 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. 2#1:01 Mount St. Helens from the northwest; moderating activity at sunset. Skamania County, Washington. (Photo by J. Vallance, USGS) Categories: Image; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Mount St. Helens Collection, Photographers, Skamania County, Washington, Vallance, J.W. Collection, Volcanoes, All tags... aerial, color transparency (slides), Fewer tags Slides of the July 22, 1980 eruption of Mount St. Helens. Skamania County, Washington. 1980. 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. Slides no. 5 through 25 were taken between 18:25:20 and 18:26:30 This sequence was taken while moving counter-clockwise from the north to the west flank of Mount St. Helens at a distance of about 7 miles and while changing elevation from about 10,000 to 12,000 feet. Approximately 3 seconds after slide no. 20. Skamania County, Washington. (Photo by J. Vallance, USGS) 18:26:20.... Categories: Image; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Mount St. Helens Collection, Photographers, Skamania County, Washington, Vallance, J.W. Collection, Volcanoes, All tags... aerial, color transparency (slides), Fewer tags Sequence of photographs show second eruptive pulse on July 22, 1980. Mount St. Helens, Skamania County, Washington. 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... Categories: Image; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Mount St. Helens Collection, Photographers, Skamania County, Washington, Vallance, J.W. Collection, Volcanoes, All tags... aerial, color transparency (slides), Fewer tags Oblique aerial view of Mount St. Helens as viewed from the northwest. Skamania County, Washington. 1980. Album caption: Oblique aerial view of Mount St. Helens as viewed from the northwest at about 1826:30 PDT on July 22, 1980, about 13 seconds after the view shown in figure 5 (photo no. 13). Note that a vertical column is forming rapidly. Highest point on the eruption cloud is about 4,100 m above the highest point on the rim of the amphitheater. Skamania County, Washington. (Photo by J.W. Vallance; similar to MSH-July 22, 1980 no. 25ct) Published as figure 5 in U.S. Geological Survey. Professional paper 1335. 1986. Index card unavailable. Categories: Image; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: MSH-Hoblitt, R.P. Collection, Mount St. Helens Collection, Photographers, Skamania County, Washington, Volcanoes, All tags... aerial, photo print, Fewer tags Slides of the July 22, 1980 eruption of Mount St. Helens. Skamania County, Washington. 1980. 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. 19:01 the pyroclastic flow advances northward. Note lobate flow front. Skamania County, Washington. (Photo by J. Vallance, USGS) Categories: Image; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Mount St. Helens Collection, Photographers, Skamania County, Washington, Vallance, J.W. Collection, Volcanoes, All tags... aerial, color transparency (slides), Fewer tags Slides of the July 22, 1980 eruption of Mount St. Helens. Skamania County, Washington. 1980. 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. Slides no. 5 through 25 were taken between 18:25:20 and 18:26:30 This sequence was taken while moving counter-clockwise from the north to the west flank of Mount St. Helens at a distance of about 7 miles and while changing elevation from about 10,000 to 12,000 feet. Approximate 3 seconds after slide no.6. The fountain of ash gives rise to a pyroclastic flow that sweeps over... Categories: Image; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Mount St. Helens Collection, Photographers, Skamania County, Washington, Vallance, J.W. Collection, Volcanoes, All tags... aerial, color transparency (slides), Fewer tags Slides of the July 22, 1980 eruption of Mount St. Helens. Skamania County, Washington. 1980. 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. Slides 28 through 37 show second eruptive pulse. This sequence was taken while moving counter-clockwise from the southwest to the south side of the mountain at a distance of 7 to 10 miles and while changing elevation from 12,000 to 15,000 feet. Note the bicolored appearance of the plume: the lighter portion is the ask cloud rising from the pyroclastic flows. View of eruption... Categories: Image; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Mount St. Helens Collection, Photographers, Skamania County, Washington, Vallance, J.W. Collection, Volcanoes, All tags... aerial, color transparency (slides), Fewer tags Slides of the July 22, 1980 eruption of Mount St. Helens. Skamania County, Washington. 1980. 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. Slides no. 5 through 25 were taken between 18:25:20 and 18:26:30 This sequence was taken while moving counter-clockwise from the north to the west flank of Mount St. Helens at a distance of about 7 miles and while changing elevation from about 10,000 to 12,000 feet. Approximate 3 seconds after slide no.6. The fountain of ash gives rise to a pyroclastic flow that sweeps over... Categories: Image; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Mount St. Helens Collection, Photographers, Skamania County, Washington, Vallance, J.W. Collection, Volcanoes, All tags... aerial, color transparency (slides), Fewer tags Slides of the July 22, 1980 eruption of Mount St. Helens. Skamania County, Washington. 1980. 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. Slides no. 5 through 25 were taken between 18:25:20 and 18:26:30 This sequence was taken while moving counter-clockwise from the north to the west flank of Mount St. Helens at a distance of about 7 miles and while changing elevation from about 10,000 to 12,000 feet. Approximate 3 seconds after slide no.6. The fountain of ash gives rise to a pyroclastic flow that sweeps over... Categories: Image; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Mount St. Helens Collection, Photographers, Skamania County, Washington, Vallance, J.W. Collection, Volcanoes, All tags... aerial, color transparency (slides), Fewer tags Sequence of photographs show second eruptive pulse on July 22, 1980. Mount St. Helens, Skamania County, Washington. Typed caption accompanying slides: Slide numbers 43 through 62 show the third eruptive pulse. This sequence was taken while moving clockwise from the west to the north siide of the mountain at a distance of 7 to 10 miles and at an elevation of 17,000 feet. The .zip file contains JPEG and TIFF versions of each color transparency. 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... Categories: Image; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Mount St. Helens Collection, Photographers, Skamania County, Washington, Vallance, J.W. Collection, Volcanoes, All tags... aerial, color transparency (slides), Fewer tags Sequence of photographs show second eruptive pulse on July 22, 1980. Mount St. Helens, Skamania County, Washington. 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... Categories: Image; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Mount St. Helens Collection, Photographers, Skamania County, Washington, Vallance, J.W. Collection, Volcanoes, All tags... aerial, color transparency (slides), Fewer tags Slides of the July 22, 1980 eruption of Mount St. Helens. Skamania County, Washington. 1980. 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. Slides 28 through 37 show second eruptive pulse. This sequence was taken while moving counter-clockwise from the southwest to the south side of the mountain at a distance of 7 to 10 miles and while changing elevation from 12,000 to 15,000 feet. Note the bicolored appearance of the plume: the lighter portion is the ask cloud rising from the pyroclastic flows. View of eruption... Categories: Image; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Mount St. Helens Collection, Photographers, Skamania County, Washington, Vallance, J.W. Collection, Volcanoes, All tags... aerial, color transparency (slides), Fewer tags Slides of the July 22, 1980 eruption of Mount St. Helens. Skamania County, Washington. 1980. 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 19:04. Skamania County, Washington. (Photo by J. Vallance, USGS) Categories: Image; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Glicken H.C. Collection Mount St. Helens msh198005, Mount St. Helens Collection, Photographers, Skamania County, Washington, Vallance, J.W. Collection, All tags... Volcanoes, aerial, color transparency (slides), Fewer tags 1 2 3 4 »