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ImageDetailsVolcanoesKeywords
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Caption:Devils Desk, Alaska.
Date:July 30, 1999 12:00 AM
Photographer:Fierstein, J. E.
Devils DeskVolcano, Glacier
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Caption:Devils Desk, Alaska.
Date:July 28, 1999 12:00 AM
Photographer:Fierstein, J. E.
Devils DeskVolcano
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Caption:Mount Mageik, Katmai National Park and Preserve.
Date:July1999 12:00 AM
Photographer:Adleman, Jennifer
MageikVolcano
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Caption:Mike Sorey and Cindy Werner collect CO2 gas sample from an active vent on Shrub mud volcano.
Date:June 23, 1999 12:00 AM
Photographer:McGimsey, R. G.
Klawasi Group, ShrubMud volcano
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Caption:Scoria on snow
Date:May 29, 1999 12:00 AM
Photographer:Nye, C. J.
ShishaldinTephra, Volcano
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Caption:False color composite satellite image of an eruption of Mount Shishaldin volcano in 1999. The volcano is located on the central part of Unimak Island just west of the Alaska Peninsula of Alaska. This was one of the first volcanic eruptions that was observed by the Landsat 7 ETM+ satellite. Composite produced with a Red-Green-Blue channel combination of Band 4 - Band 3 - Band 2 respectively. This combination produces an image that displays vegetation in red. Lahars, also known as mud flows can be seen on the northern flank of the volcano. The ash plume from this eruption can be seen extending to the south and is very ash rich from the dark coloration. Ash deposits can also be seen on the east and southeast sides of the volcano. Produced by Steve J. Smith, Volcanology/Remote Sensing Graduate Student from the Geophysical Institute University of Alaska Fairbanks, the College of Science, Engineering, and Mathematics, and the Alaska Volcano Observatory. Image was run through a linear 0-255 enhancement.
Date:May 25, 1999 12:00 AM
Photographer:Smith, S. J.
ShishaldinEruption cloud/ plume/ column, Stratovolcano, Tephra, Volcano
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Caption:Spurr summit
Date:May 16, 1999 12:00 AM
Photographer:McGimsey, R. G.
SpurrCaldera/crater, Glacier, Stratovolcano, Volcano
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Caption:Guy Tytgat measuring ash, after Shishaldin's 1999 eruptions.
Date:May1999 12:00 AM
Photographer:Beget, J. E.
ShishaldinFieldwork operations, People in action, Volcano
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Caption:An ash burst from Shishaldin.
Date:April 23, 1999 12:00 AM
Photographer:McGimsey, R. G.
ShishaldinEruption cloud/ plume/ column, Tephra, Stratovolcano, Volcano
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Caption:An ash burst from Shishaldin. The view is from the NNW.
Date:April 23, 1999 12:00 AM
Photographer:McGimsey, R. G.
ShishaldinEruption cloud/ plume/ column, Stratovolcano, Tephra, Volcano
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Caption:Shishaldin 1999.
Date:April 23, 1999 12:00 AM
Photographer:McGimsey, R. G.
ShishaldinVolcano, Stratovolcano, Tephra, Eruption cloud/ plume/ column
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Caption:Shishaldin 1999.
Date:April 23, 1999 12:00 AM
Photographer:McGimsey, R. G.
ShishaldinVolcano, Stratovolcano, Tephra, Eruption cloud/ plume/ column
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Caption:Looking south over the surface of Turquoise Lake. Plumes of warm water stir sediment and give the lake its characteristic blue-green color. The lake is ~2km wide, and drains to the south (far end of lake in this image).
Date:1999 12:00 AM
Photographer:Stelling, P. L.
FisherCaldera/crater, Hot Springs, Lake, Volcano
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Caption:AVO scientist Dr. Jim Gardner stands on the southern crest of Mt. Finch, looking southwest at the snow covered peaks of Westdahl volcano (far left), Faris Peak (center) and Pogromni volcano (right). The snow-free peak on the left is a pre-caldera stratocone cut in half by caldera collapse during the caldera forming eruption 9,400 years ago.
Date:1999 12:00 AM
Photographer:Stelling, P. L.
Faris Peak, Finch, Mt, Fisher, Pogromni, WestdahlCaldera/crater, Hot Springs, Lake, Volcano
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Caption:Looking northeast over most of Fisher caldera. Mt. Finch, the most recently active vent at Fisher, is in the foreground on the right. The lake in the foreground is the western caldera lake; the lake in the middle ground is the east caldera lake, and the cliff at the far end of this lake is the eastern caldera wall. Shishaldin and Isanotski volcanoes in the background (right and far right, respectively).
Date:1999 12:00 AM
Photographer:Stelling, P. L.
Fisher, Isanotski, Shishaldin, Finch, MtCaldera/crater, Hot Springs, Lake, Volcano
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Caption:A group of small cinder cones outside southeast rim of Fisher caldera. The largest cone, on the left, is about 300 m high. These cones formed during a single eruption and produced a lava flow (red area in foreground) that traveled ~9km southward, nearly reaching the Pacific Ocean. In the background is the eastern caldera lake (far right), the eastern caldera wall, and the low area outside the eastern caldera (center). View is to the north.
Date:1999 12:00 AM
Photographer:Stelling, P. L.
FisherCaldera/crater, Hot Springs, Lake, Volcano
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Caption:Looking east over the eastern half of Fisher caldera. Shishaldin (left) and Isanotski volcanoes are in the background. The eastern caldera lake is on the left, and the far end of this lake marks the eastern caldera wall. The caldera wall is also seen as the dark ridge in the middle ground. Note the blonde phreatomagmatic surge deposits that cap all prominent ridges in the eastern portion of the caldera. The likely source of these surge deposits is the maar crater just south (right) of the eastern caldera lake. The summit of Mt. Finch, with a small crater lake, is in the foreground. Blonde areas on Mt. Finch are hydrothermally altered areas from fumarolic activity rather than surge deposits.
Date:1999 12:00 AM
Photographer:Stelling, P. L.
Finch, Mt, Fisher, Isanotski, ShishaldinCaldera/crater, Hot Springs, Lake, Volcano
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Caption:Eickelberg Peak being surrounded by incoming fog. Eickelberg Peak is one of several pre-caldera stratovolcanoes partially destroyed in the caldera-forming eruption 9,400 years ago. The western caldera lake is in the foreground; view to NW.
Date:1999 12:00 AM
Photographer:Stelling, P. L.
Eickelberg Peak (Cone 8), FisherCaldera/crater, Hot Springs, Lake, Volcano
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Caption:Mt. Finch (foreground), Turquoise Lake (left) and the western caldera lake (right). Turquoise Cone and the western caldera rim are obscured by clouds in the background. Small lake in the foreground is the crater lake in the summit of Mt. Finch. View to the W.
Date:1999 12:00 AM
Photographer:Stelling, P. L.
Finch, Mt, FisherCaldera/crater, Hot Springs, Lake, Volcano
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Caption:Rising steam highlights the trace of a warm stream fed by hot spring water in the southwestern caldera floor, just south of Turquoise Cone. The hottest spring temperatures measured in 2000 were >110 oF.
Date:1999 12:00 AM
Photographer:Stelling, P. L.
FisherCaldera/crater, Hot Springs, Lake, Volcano
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Caption:The hottest of several hot springs in the southwestern portion of the caldera, just south of Turquoise Cone. The hottest spring temperatures measured in 2000 were >110 F. This spring is about 10 meters wide.
Date:1999 12:00 AM
Photographer:Stelling, P. L.
FisherCaldera/crater, Hot Springs, Lake, Volcano
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Caption:Maar craters on the southern shores of the eastern caldera lake at Fisher volcano. The interaction of magma and groundwater can be violent, and rapidly expanding steam can excavate a crater called a maar. The eastern caldera wall is in the background.
Date:1999 12:00 AM
Photographer:Stelling, P. L.
FisherCaldera/crater, Hot Springs, Lake, Maar/tuff cone/tuff ring, Volcano
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Caption:Pyroclastic surge deposits within the caldera east of Mt. Finch. These deposits were formed during a violent phreatomagmatic eruption caused by the interaction of magma and water. The vent for this eruption was likely one of the maar craters on the southern shore of the eastern caldera lake and ~5 km east of Mt. Finch. Similar deposits, although not as thick and often less laminated, are found in most areas of Fisher volcano.
Date:1999 12:00 AM
Photographer:Stelling, P. L.
FisherCaldera/crater, Hot Springs, Lake, Volcano
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Caption:Scenic view of Iron Trig Cone. Photo courtesy of Wes Hildreth/USGS.
Date:1999 12:00 AM
Photographer:Hildreth, E. W.
Iron Trig coneCinder cone, Volcano
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Caption:Kaguyak Volcano
Date:August 27, 1998 12:00 AM
Photographer:Miller, T. P.
KaguyakCaldera/crater, Volcano
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