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Caption:Douglas 1990. Photograph courtesy of Tom Casadevall.
Date:June 4, 1990 12:00 AM
Photographer:Casadevall, Tom
DouglasVolcano
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Caption:Lahars from the 1989 to 1990 eruptions of Redoubt Volcano inundated this structure near the mouth of Drift River, 35 km (22 mi) from the volcano. Photograph by C. Gardner, U.S. Geological Survey, June 1, 1990.
Date:June 1, 1990 12:00 AM
Photographer:Gardner, C. A.
RedoubtDebris flow/mudflow/landslide/lahar
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Caption:The south face of the final lava dome of the 1989 to 1990 series of eruptions of Redoubt Volcano as it appeared during the waning phases of eruption. A fractured lobe of blocky lava is visible at center. Steam from the interaction of meltwater with hot rock billows from the margins of the lava dome. Remnants of glacial ice with a coating of gray ash surround the dome. Photograph by C. Gardner, U.S. Geological Survey, June 1, 1990.
Date:June 1, 1990 12:00 AM
Photographer:Gardner, C. A.
RedoubtDome, Steam
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Caption:Ash and pumice covering alders at Two-Tree Knob near Redoubt Volcano. The ash is from the 1989 eruption of Redoubt.
Date:May 30, 1990 12:00 AM
Photographer:McGimsey, Game
RedoubtTephra
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Caption: Churchill Mountain Climb 1990. Photograph courtesy of Game McGimsey.
Date:May 24, 1990 12:00 AM
Photographer:McGimsey, Game
Churchill, MtVolcano, Caldera/crater, Tephra
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Caption:Tom Brigham and Game McGimsey of the U.S. Geological Survey climbing party reaching the east rim of the summit caldera on 4,766-m (15,636 ft)-high Mount Churchill, site of two of the most voluminous explosive eruptions in North America in the past 2,000 years. Blocky debris in the photo consists of pumice and lithic fragments ejected 1,250 years ago. This deposit forms the eastern lobe of the White River Ash. Photo by G. Dubois, U.S. Geological Survey, May 20, 1990.
Date:May 20, 1990 12:00 AM
Photographer:DuBois, G.
Churchill, MtCaldera/crater, Volcano
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Caption:Tom Brigham and Game McGimsey ascend to the caldera rim of Mt. Churchill, 9th highest peak in Alaska to confirm it as the source of the White River ash.
Date:May 20, 1990 12:00 AM
Photographer:DuBois, G.
Churchill, MtFieldwork operations, People in action, Volcano
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Caption:During the eruption of Redoubt Volcano on December 15, 1989, ), hot ejecta falling onto the upper flanks of the volcano produced avalanches of snow, ice, meltwater, and pyroclastic debris to form an unusual ice-rock diamict. In this view, the diamict is approximately 4.5 m (15 ft) thick and caps ice of the piedmont lobe of Drift glacier . Overlying the ice-rock diamict are sand to gravel-sized pyroclastic flow deposits from eruptions between January and March of 1990. Photograph by C. Gardner, U.S. Geological Survey, May 19, 1990.
Date:May 19, 1990 12:00 AM
Photographer:Gardner, C. A.
RedoubtAvalanche, Debris flow/mudflow/landslide/lahar
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Caption:U.S. Geological Survey climbing party ascending the Klutlan Glacier en route to 4,766- m (15,636 ft)-high Mount Churchill. This volcano was the site of two of the most voluminous explosive eruptions in North America in the past 2,000 years. View is to the southwest. Photo by R. McGimsey, U.S. Geological Survey, May 16, 1990.
Date:May 16, 1990 12:00 AM
Photographer:McGimsey, R. G.
Churchill, MtGlacier, Volcano
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Caption: Churchill Mountain Climb 1990. Photograph courtesy of Game McGimsey.
Date:May 16, 1990 12:00 AM
Photographer:McGimsey , Game
Churchill, MtVolcano, Caldera/crater, Tephra
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Caption:Geologist John Ewert using a laser surveying instrument to measure distances to reflective prisms or targets installed on the flanks of Redoubt Volcano in the distance. Minute changes in distances to the targets can indicate ground deformation that may be related to subsurface magma movement. View is to the south. Photograph by R. McGimsey, May 4, 1990.
Date:May 4, 1990 12:00 AM
Photographer:McGimsey, Game
RedoubtFieldwork operations, People in action
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Caption:Geologist Willie Scott collects ash from Redoubt Volcano. Using a template, he collects a measured area of ash which has fallen on snow. The sample is bagged, dried, and weighed; results are used in conjuction with measurements at many other points along the fallout path to compute an accurate eruption volume measurement. Redoubt Volcano is in the background.
Date:April 23, 1990 12:00 AM
Photographer:Brantley, S.
RedoubtFieldwork operations, People in action, Tephra, Volcano
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Caption:Willie Scott and Game McGimsey collecting tephra from 1989-1990 eruption of Redoubt Volcano.
Date:April 23, 1990 12:00 AM
Photographer:Brantley, Steve
RedoubtPeople in action, Tephra
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Caption:Ascending eruption cloud from Redoubt Volcano and its reflection in the waters of Cook Inlet. View is to the west from the Kenai Peninsula. Photograph by J. Warren, April 21, 1990.
Date:April 21, 1990 12:00 AM
Photographer:Warren, J.
RedoubtEruption cloud/ plume/ column
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Caption:Ascending eruption cloud from Redoubt Volcano and its reflection in the waters of Cook Inlet. View is to the west from the Kenai Peninsula. Photograph by J. Warren, April 21, 1990.
Date:April 21, 1990 12:00 AM
Photographer:Warren, J.
RedoubtEruption cloud/ plume/ column
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Caption:Ascending eruption cloud from Redoubt Volcano as viewed to the west from the Kenai Peninsula. The mushroom-shaped plume rose from avalanches of hot debris (pyroclastic flows) that cascaded down the north flank of the volcano. A smaller, white steam plume rises from the summit crater. Photograph by R. Clucas, April 21, 1990.
Date:April 21, 1990 12:00 AM
Photographer:Clucas, R.
RedoubtEruption cloud/ plume/ column
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Caption:One of the principal facilities at risk during the 1989 to 1990 eruptions of Redoubt Volcano was the Drift River Oil Terminal located at the mouth of the Drift River, 35 km (22 mi) northeast of the volcano. This aerial view, looking southwest, shows the 1.9 million barrel capacity oil storage tanks. Redoubt Volcano is on the skyline at left. Photograph by R. McGimsey, U.S. Geological Survey, April 13, 1990.
Date:April 13, 1990 12:00 AM
Photographer:McGimsey, Game
RedoubtDebris flow/mudflow/landslide/lahar
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Caption:View of dome and crater of Redoubt Volcano during the tail end of the 1989/1990 eruption.
Date:April 11, 1990 12:00 AM
Photographer:McGimsey, Game
RedoubtCaldera/crater, Steam, Stratovolcano, Volcano
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Caption:The 1989 to 1990 eruptions of Redoubt Volcano were characterized by repeated growth and destruction of lava domes in the summit crater. Avalanching of hot debris from disintegrating lava domes caused extensive melting of the glacier draining the summit crater and produced deeply incised channels with steep ice walls. View is to the north. Photograph by T. Miller, U.S. Geological Survey, April 7, 1990.
Date:April 7, 1990 12:00 AM
Photographer:Miller, Tom
RedoubtAvalanche, Glacier
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Caption:Geologists Ed Wolfe and Cynthia Gardner examining steaming pyroclastic-flow deposits from the March 23, 1990, eruption of Redoubt Volcano that came to rest on the margin of the piedmont lobe of Drift glacier. Darker areas were wet and reflected melting of glacial ice incorporated into the deposit. The collapse pits seen here resulted from funneling of debris into crevasses and holes in the buried surface of the glacier. Photograph by G. McGimsey, U.S. Geological Survey, March 23, 1990.
Date:March 23, 1990 12:00 AM
Photographer:McGimsey, Game
RedoubtDebris flow/mudflow/landslide/lahar, Fieldwork operations, Glacier, People in action
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Caption:Drift River Oil Terminal and lahars (outlined) in Rust Slough, March 23, 1990. Figure from: Waythomas, C. F., Dorava, J. M., Miller, T. P., Neal, C. A., and McGimsey, R. G., 1998, Preliminary volcano-hazard assessment for Redoubt Volcano, Alaska: U.S. Geological Survey Open-File Report OF 98-0857, 40 p.
Date:March 22, 1990 12:00 AM
Photographer:Wolfe, E W; US Geological Survey
RedoubtDebris flow/mudflow/landslide/lahar
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Caption:Geologists Jon Major and Ed Wolfe view an unusual flowing mixture of water and ice in the upper Drift River. The flow was produced by a sudden release of impounded water from the upper reaches of the Drift River canyon which drains the summit crater of Redoubt Volcano. Photograph by G. McGimsey, U.S. Geological Survey, March 15, 1990.
Date:March 15, 1990 12:00 AM
Photographer:McGimsey, Game
RedoubtDebris flow/mudflow/landslide/lahar, Fieldwork operations, People in action
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Caption:Gray ash from the February 21, 1990, eruption of Redoubt Volcano blankets the snow in Indian, Alaska, a community about 32 km (20 mi) southeast of Anchorage and 200 km (124 mi) northeast of Redoubt Volcano. Photograph by R. McGimsey, U.S. Geological Survey, February 21, 1990.
Date:February 21, 1990 12:00 AM
Photographer:McGimsey, R. G.
RedoubtTephra
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Caption:The 1989 to 1990 eruptions of Redoubt Volcano were characterized by repeated growth and destruction of lava domes in the summit crater. This view shows the north face of the second largest lava dome, which was destroyed during an explosive eruption on February 15, 1990. Photograph by R. McGimsey, U.S. Geological Survey, February 2, 1990.
Date:February 15, 1990 12:00 AM
Photographer:McGimsey, R. G.
RedoubtDome
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Caption:Approximate extent of pyroclastic surge deposits (dashed line) on Ptarmigan Ridge (unofficial name) north of Redoubt Volcano. Figure from: Waythomas, C. F., Dorava, J. M., Miller, T. P., Neal, C. A., and McGimsey, R. G., 1998, Preliminary volcano-hazard assessment for Redoubt Volcano, Alaska: U.S. Geological Survey Open-File Report OF 98-0857, 40 p.
Date:February 15, 1990 12:00 AM
Photographer:Gardner, Cynthia; US Geological Survey
RedoubtPyroclastic flow, Tephra
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