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ImageDetailsVolcanoesKeywords
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Caption:Westdahl eruption 1991. Northeast lava flow.
Date:December 4, 1991 12:00 AM
Photographer:Neal , Christine
WestdahlLava flow, Steam, Tephra, Volcano
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Caption:Westdahl eruption 1991. Northeast lava flow.
Date:December 4, 1991 12:00 AM
Photographer:Neal , Christine
WestdahlLava flow, Steam, Tephra, Volcano
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Caption:Westdahl eruption 1991. Mudflow into the Pacific.
Date:December 4, 1991 12:00 AM
Photographer:Neal , Christine
WestdahlDebris flow/mudflow/landslide/lahar, Eruption cloud/ plume/ column, Steam, Volcano
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Caption:Westdahl eruption 1991. Plume to North.
Date:December 4, 1991 12:00 AM
Photographer:Neal , Christine
WestdahlEruption cloud/ plume/ column, Steam, Volcano
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Caption:Westdahl eruption 1991. Northeast mudflow.
Date:December 4, 1991 12:00 AM
Photographer:Neal , Christine
WestdahlDebris flow/mudflow/landslide/lahar, Eruption cloud/ plume/ column, Lava flow, Steam, Tephra, Volcano
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Caption:Anaglyph (3-D) image of a view looking north of a Westdahl eruption plume on December 4, 1991. Photographs taken by Christina Neal, AVO/USGS. Anaglyph created by Peter Lipschutz. For best viewing, use red-blue glasses, with left eye red.
Date:December 4, 1991 12:00 AM
Photographer:Neal, Christina; Lipschutz, Peter
WestdahlVolcano, Tephra, Eruption cloud/ plume/ column
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Caption:Westdahl eruption 1991. Westdahl plume and smaller Shishaldin plume. View to the North .
Date:December 3, 1991 12:00 AM
Photographer:Neal, Christina
Westdahl, ShishaldinEruption cloud/ plume/ column, Volcano
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Caption:Crater Peak, a satellite vent of Mount Spurr volcano, and the snow- and ice-covered summit lava dome complex of Mount Spurr beyond. View is to the north. Photograph by R. McGimsey, U.S. Geological Survey, 10/9/91.
Date:October 9, 1991 12:00 AM
Photographer:McGimsey, R. G.
SpurrDome, Volcano
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Caption:Double Glacier Volcano 1991. Photograph courtesy of Tom Miller.
Date:August 29, 1991 12:00 AM
Photographer:Miller, Tom
Double GlacierGlacier, Volcano
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Caption:Double Glacier Volcano 1991. Photograph courtesy of Tom Miller.
Date:August 29, 1991 12:00 AM
Photographer:Miller, Tom
Double GlacierGlacier, Volcano
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Caption:Double Glacier Volcano 1991. Photograph courtesy of Tom Miller.
Date:August 29, 1991 12:00 AM
Photographer:Miller, Tom
Double GlacierGlacier, Volcano
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Caption:Double Glacier Volcano 1991. Photograph courtesy of Tom Miller.
Date:August 29, 1991 12:00 AM
Photographer:Miller, Tom
Double GlacierGlacier, Volcano
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Caption:Mount Douglas, a dissected and largely ice-covered, 2,135-m (7,005 ft)-high stratovolcano at the northeastern tip of the Alaska Peninsula. View is to the south. Photograph by C. Nye, Alaska Division of Geological and Geophysical Surveys, August, 1991.
Date:August1991 12:00 AM
Photographer:Nye, C.
DouglasFieldwork operations, Stratovolcano, Volcano
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Caption:Katmai Caldera, a collapse feature that formed during the catastrophic eruption of nearby Novarupta volcano in June, 1912. Katmai Caldera is a steep-walled, 1.5-km (1 mi)-diameter crater that truncates a formerly 2,290-m (7,513 ft)-high stratovolcano. The caldera is partially filled by a blue-green lake about 250 m (820 ft) deep. The lake level was still rising when last measured in the mid-1970's. Beyond the caldera are the multiple peaks of Trident Volcano; Mount Mageik volcano is the snow and ice-covered cone on the skyline. View is to the northeast. Photograph by C. Nye, Alaska Division of Geological and Geophysical Surveys, August, 1991.
Date:August1991 12:00 AM
Photographer:Nye, C.
Katmai, Mageik, TridentCaldera/crater, Lake, Stratovolcano, Volcano
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Caption:Aerial view of 80-m (260 ft)-high Novarupta, a blocky rhyolite lava dome that marks the vent for the 1912 eruption that created the Valley of Ten Thousand Smokes in Katmai National Park and Preserve, Alaska. This eruption was the most voluminous on Earth in the 20th century, ejecting nearly 30 cubic kilometers (7 cubic miles) of material in 60 hours. Surrounding the dome is an oval-shaped ring of coarse tephra that accumulated during the waning explosive phases of the 1912 eruption. Photograph by C. Nye, Alaska Division of Geological and Geophysical Surveys, August, 1991.
Date:August1991 12:00 AM
Photographer:Nye, C.
NovaruptaDome, Tephra, Volcano
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Caption:View from Mount Katmai of Novarupta lava dome (dark, rounded feature in center), which is surrounded by (clockwise from upper left) Falling, Baked, and Broken Mountains. The Valley of Ten Thousand Smokes (upper right), Katmai National Park and Preserve, Alaska, was created by the 1912 eruption of Novarupta volcano. Photograph by C. Nye, Alaska Division of Geological and Geophysical Surveys, August, 1991.
Date:August1991 12:00 AM
Photographer:Nye, C.
Falling Mtn, NovaruptaDome, Volcano
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Caption:Geologist Tina Neal examining 1990 pyroclastic-flow and pyroclastic-surge deposits on the surface of the piedmont lobe of Drift glacier at Redoubt Volcano. Photograph by C. Gardner, U.S. Geological Survey, July 20, 1991.
Date:July 20, 1991 12:00 AM
Photographer:Gardner, C.
RedoubtFieldwork operations, Glacier, People in action
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Caption:Mount Jarvis, 4,091 m (13,421 ft) high, is the youngest volcano in the eastern Wrangell volcanic field. Mount Jarvis was active approximately 1 to 2 million years ago. View is to the southeast. Photograph by R. McGimsey, U.S. Geological Survey, July 15, 1991.
Date:July 15, 1991 12:00 AM
Photographer:McGimsey, R. G.
JarvisVolcano
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Caption:Geologist Jack Kleinman setting up GPS (Global Positioning System) instrumentation on the north flank of Redoubt Volcano. The GPS receiver calculates an extremely accurate position on the Earth's surface through satellite-based triangulation. View is to the northeast. Photograph by Game McGimsey, June 21, 1991.
Date:June 21, 1991 12:00 AM
Photographer:McGimsey, Game
RedoubtFieldwork operations, People in action, Seismic/GPS installation
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Caption:Geologist Jack Kleinman sets up a tripod at the 6200' level on the north flank of Redoubt Volcano, Alaska. A Global Positioning System antenna was placed on the tripod as part of a volcano-wide survey to look for deformation of the edifice.
Date:June 21, 1991 12:00 AM
Photographer:McGimsey, Game
RedoubtFieldwork operations, People in action, Seismic/GPS installation, Volcano
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Caption:Jack Kleinman setting up a GPS station at the 6200' camera site on Redoubt.
Date:June 21, 1991 12:00 AM
Photographer:McGimsey, G.
RedoubtFieldwork operations, People in action, Seismic/GPS installation, Volcano
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Caption:Hayes Volcano. Pyroclastic flows and dome at 7200 feet showing the Granite/Quaternary pyroclastic flow contact.
Date:June 14, 1991 12:00 AM
Photographer:Miller, Tom
HayesDome, Pyroclastic flow
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Caption:Hayes Volcano. Quaternary pyroclastic flows are seen behind a granitic complex in the foreground.
Date:June 14, 1991 12:00 AM
Photographer:Miller, Tom
HayesVolcano, Stratovolcano, Pyroclastic flow
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Caption:View southeast up the Valley of Ten Thousand Smokes from the Overlook Cabin above Three Forks in Katmai National Park and Preserve, Alaska. The valley is filled with up to 200 m (660 ft) of ash-flow deposits from the 1912 eruption of Novarupta volcano. The rim of Katmai Caldera is on the skyline at left. Photograph by Game McGimsey, U.S. Geological Survey, June 10, 1991.
Date:June 10, 1991 12:00 AM
Photographer:McGimsey, Game
Katmai, NovaruptaCaldera/crater, Tephra
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Caption:View southeast up the Valley of Ten Thousand Smokes from the Overlook Cabin in Katmai National Park and Preserve, Alaska. The valley has been filled with up to 200 m (660 ft) of ash-flow deposits from the 1912 eruption of Novarupta volcano. The rim of Katmai Caldera is on the skyline at left. Photograph by Game McGimsey, U.S. Geological Survey, June 8, 1991.
Date:June 8, 1991 12:00 AM
Photographer:McGimsey, R.
Katmai, NovaruptaCaldera/crater, Tephra
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