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Caption:Veniaminof volcano in eruption, August 18, 2013. Ash billows from the intracaldera cinder cone as molten lava streams from two separate vents high on the east flank of the cone. The level of the highest lava source likely marks the level of a lava lake within the active crater. Photo taken by Game McGimsey, AVO/USGS. This overflight of Veniaminof was co-sponsored by the National Geographic Society.
Date:August 18, 2013 8:30 PM
Photographer:McGimsey, Game
Caldera/crater, Eruption cloud/ plume/ column, Glacier, Lava flow, Lava fountaining, Tephra
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Caption:Aerial view of the eruption at Veniaminof's intracaldera cone, August 18, 2013. This cone rises about 1000 feet above the surrounding icefield. It has been intermittently erupting lava, ash and steam since June 13, 2013. This photo shows the incandescent, orange stream of molten lava emerging from the active cone. Steam billows from the pit at the base of the cone where the lava encounters and melts ice and snow. A small, ash-rich plume rises just above the vent producing a diffuse ash cloud that drifts downwind. In the foreground, round white patches probably represent ballistic impact craters. Photo taken by Game McGimsey, AVO/USGS. This overflight of Veniaminof was co-sponsored by the National Geographic Society.
Date:August 18, 2013 8:21 PM
Photographer:McGimsey, Game
VeniaminofCaldera/crater, Cinder cone, Eruption cloud/ plume/ column, Glacier, Lava flow, Lava fountaining, Tephra
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Caption:Lava bombs and ash are hurled from the summit vent of the cinder cone of Veniaminof volcano during the Strombolian eruption that also produced lava flows down the flanks onto the ice-filled caldera floor.
Date:August 18, 2013 8:11 PM
Photographer:McGimsey, Game
VeniaminofBomb, Caldera/crater, Cinder cone, Eruption cloud/ plume/ column, Glacier
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Caption:A small puff of ash emerges from the active cone inside Veniaminof caldera on August 18, 2013. A beautiful fan of lava flows active earlier in the summer descends onto glacial ice producing white steam clouds and depressions where melting has occurred. The surrounding glacier is darkened by recent ash fall.
Date:August 18, 2013 8:00 PM
Photographer:McGimsey, Game
VeniaminofCaldera/crater, Cinder cone, Eruption cloud/ plume/ column, Glacier, Lava flow, Lava fountaining, People in action, Tephra
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Caption:Aerial view of the erupting intracaldera cone at Veniaminof, August 18, 2013. This photo shows new lava flows produced since the eruption started on June 13, 2013. These flows (here roughly 3000 feet in length) have descended the southwest flank of the cone and traveled onto the ash-covered snow and icefield. Melting of the snow and ice has created the depressions beneath the young flows. A small puff of ash rises from the active vent. Photo taken by Game McGimsey, AVO/USGS. Overflight to Veniaminof co-sponsored by the National Geographic Society.
Date:August 18, 2013 8:00 PM
Photographer:McGimsey, Game
VeniaminofCaldera/crater, Cinder cone, Eruption cloud/ plume/ column, Glacier, Lava flow, Lava fountaining, Tephra
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Caption:Veniaminof volcano in eruption, August 18, 2013. Pulses of ash rise from the intracaldera cinder cone. The active vent is nestled within and atop a previously constructed cinder cone. Note the cloud of ballistics immediately above the dense ash plume rising from the vent. Photo taken by Game McGimsey, AVO/USGS. This overflight of Veniaminof was co-sponsored by the National Geographic Society.
Date:August 18, 2013 7:49 PM
Photographer:McGimsey, Game
Caldera/crater, Cinder cone, Eruption cloud/ plume/ column, Glacier, Lava flow, Lava fountaining, People in action, Tephra
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Caption:Panoramic view from the northeast of the erupting intracaldera cone of Veniaminof volcano. The ice-filled caldera is 8x11 km.
Date:August 18, 2013 12:00 AM
Photographer:McGimsey, Game
VeniaminofCaldera/crater, Cinder cone, Eruption cloud/ plume/ column, Glacier, Lava flow, Lava fountaining
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Caption:FLIR (Forward Looking Infrared Radiometer) image of the erupting intracaldera cone of Veniaminof volcano. In this oversaturated image (due to low thermal imagery setting), the active lava flows are red and the lava fountaining at the summit is easily visible. These lava flows are on the east flank of the cone.
Date:August 18, 2013 12:00 AM
Photographer:McGimsey, Game
VeniaminofGlacier, Lava flow, Lava fountaining
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Caption:Panoramic view from the north of the active intracaldera cone of Veniaminof volcano.
Date:August 18, 2013 12:00 AM
Photographer:McGimsey, Game
VeniaminofCaldera/crater, Eruption cloud/ plume/ column, Glacier, Lava flow, Lava fountaining
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Caption:Aerial view toward the southwest of the actively erupting cone within Veniaminof caldera. The white steam plume is produced where a lava flow is descending the side of the cone and melting snow and ice. The darker colored, ashy plume is rising in bursts from the active vent. Nearly continuous eruption from this vent since early June has built a new small tephra cone and an apron of lavas along the southwest flank of the cone. The caldera is about 10 km (6.5 mi) in diameter. The cone rises about 330 m (1080 ft) above the surrounding ice field. Note the dark stripe of ash fall on the ice. This photo was taken during a brief helicopter trip into the caldera by AVO Geologist Game McGimsey and Dickinson College Geology Professor Ben Edwards.
Date:August 18, 2013 12:00 AM
Photographer:McGimsey, Game
VeniaminofCaldera/crater, Cinder cone, Eruption cloud/ plume/ column, Glacier, Lava flow
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Caption:Image of low-level ash and steam plume from Veniaminof's active intracaldera cone, August 12, 2013. Image courtesy of the FAA Perryville NW webcam.
Date:August 12, 2013 10:40 AM
Photographer:FAA Perryville NW webcam,
VeniaminofEruption cloud/ plume/ column
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Caption:Shishaldin steaming, as seen from Alaska Airlines flight.
Date:August 11, 2013 11:13 PM
Photographer:Jicha, Brian
ShishaldinSteam
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Caption:Low level plume from the active cone of Veniaminof on the evening of August 11, 2013. Image from the FAA Perryville NW webcam.
Date:August 11, 2013 11:10 PM
Photographer:FAA Perryville NW webcam,
VeniaminofEruption cloud/ plume/ column
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Caption:Active fumaroles at the summit of Makushin volcano.
Date:August 11, 2013 7:17 PM
Photographer:Schaefer, Janet
MakushinCaldera/crater, Fumarolic activity
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Caption:Active fumaroles at the summit of Makushin volcano.
Date:August 11, 2013 7:17 PM
Photographer:Schaefer, Janet
MakushinCaldera/crater, Fumarolic activity
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Caption:A large delta remains at the mouth of crater creek as sediment continues to erode from the caldera at Okmok volcano, following the 2008 eruption. The shipwreck "Equinox" can be seen buried in the sediment.
Date:August 11, 2013 4:20 PM
Photographer:Schaefer, Janet
OkmokCaldera/crater, Debris flow/mudflow/landslide/lahar
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Caption:The summit of the new cone formed during the 2008 eruption of Okmok volcano is eroding and a lake is filling the bottom of the crater. Cone D is the higher peak directly behind the new cone.
Date:August 11, 2013 3:31 PM
Photographer:Schaefer, Janet
OkmokCaldera/crater, Maar/tuff cone/tuff ring
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Caption:Large new deltas expand into north Cone D lake as the loose tephra erodes from the new cone formed during the 2008 eruption in the caldera at Okmok volcano.
Date:August 11, 2013 3:29 PM
Photographer:Schaefer, Janet
OkmokCaldera/crater, Maar/tuff cone/tuff ring
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Caption:View to the east of the new cone that formed during the 2008 eruption in the caldera at Okmok volcano. The new cone is on the left, and the older Cone D, is the higher peak on the right.
Date:August 11, 2013 2:31 PM
Photographer:Schaefer, Janet
OkmokCaldera/crater, Maar/tuff cone/tuff ring
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Caption:Erosion of the 2008 tephra deposits in Okmok caldera.
Date:August 11, 2013 2:08 PM
Photographer:Schaefer, Janet
OkmokCaldera/crater, Tephra
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Caption:The Gates at Okmok volcano.
Date:August 11, 2013 12:00 PM
Photographer:Schaefer, Janet
OkmokCaldera/crater
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Caption:The Gates at Okmok volcano
Date:August 11, 2013 12:00 PM
Photographer:Schaefer, Janet
OkmokCaldera/crater
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Caption:Janet Schaefer examines the Holocene tephra record at Makushin Volcano. This stream cut revealed about 8,000 years of history. We found peat, organic material that can help us date some of the younger ash fall layers, here prominent as stripes in the bank.
Date:August 9, 2013 3:45 PM
Photographer:Neal, Christina
MakushinPeople in action, Tephra
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Caption:Jim Beget, Jim Vallance, and Janet Schaefer at Makushin Volcano tracking tephra deposits.
Date:August 8, 2013 2:00 PM
Photographer:Neal, Christina
MakushinPeople in action, Tephra
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Caption:AVO geologist Janet Schaefer examines Makushin Volcano tephra deposits, as part of a project to better understand the eruptive history of this active volcano. Makushin lies just west of the fishing hub of Dutch Harbor/Unalaska in the Aleutian Islands.
Date:August 8, 2013 1:03 PM
Photographer:Neal, Tina
Makushin
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