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Caption:Janet Schaefer (AVO/DGGS) and Jim Vallance (USGS) examine tephra deposits from Makushin in a peat-rich outcrop. This outcrop is located in a cirque, high above Driftwood Valley. Janet used a folding extension ladder to obtain good descriptions and samples.
Date:July 23, 2015 12:00 AM
Photographer:Larsen, J. F.
MakushinFieldwork operations, Stratigraphic section, Tephra
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Caption:This fox at Makushin tried to steal a hat from Jessica Larsen. Janet Schaefer chased the fox, and retrived the hat when the fox dropped it. Here, Janet holds the hat while the fox returns for another look.
Date:July 23, 2015 12:00 AM
Photographer:Larsen, J. F.
MakushinFieldwork operations, Just for fun, Stratigraphic section, Tephra
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Caption:Janet Schaefer (AVO/DGGS) and Jim Vallance (USGS) examine tephra deposits from Makushin in a peat-rich outcrop. This outcrop is located in a cirque, high above Driftwood Valley. Janet used a folding extension ladder to obtain good descriptions and samples.
Date:July 23, 2015 12:00 AM
Photographer:Larsen, J. F.
MakushinFieldwork operations, Stratigraphic section, Tephra
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Caption:Jim Vallance (USGS) describes Makushin eruption deposits from a thick outcrop located on the north flanks of the volcano.
Date:July 23, 2015 12:00 AM
Photographer:Larsen, J. F.
MakushinFieldwork operations, Stratigraphic section, Tephra
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Caption:Makushin index map, showing location of Makushin and Unalaska / Dutch Harbor relative to other Alaska features.
Date:July 22, 2015 12:00 AM
Photographer:Schaefer, J. R. G.; Cameron, C. E.
MakushinVolcano
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Caption:Holocene ash fall deposits from Makushin volcano drape the cliffs near Dutch Harbor airport
Date:July 21, 2015 4:16 PM
Photographer:Schaefer, J. R. G.
MakushinTephra
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Caption:Holocene ash fall deposits from Makushin volcano drape the cliffs near Dutch Harbor airport
Date:July 21, 2015 4:01 PM
Photographer:Schaefer, J. R. G.
MakushinTephra
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Caption:View of Dutch Harbor, July 2015. At least three Holocene eruptions of Makushin volcano have deposited up to 20 centimeters of ash throughout the Dutch Harbor / Unalaska area.
Date:July 21, 2015 12:00 AM
Photographer:Larsen, J. F.
MakushinFieldwork operations, Infrastructure/ cultural, Tephra
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Caption:Dutch Harbor's runway, with ash deposits from Makushin volcano visible in outcrop.
Date:July 21, 2015 12:00 AM
Photographer:Larsen, J. F.
MakushinFieldwork operations, Infrastructure/ cultural, Stratigraphic section, Tephra
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Caption:Explosion signals from Mount Cleveland, recorded on 21 July 2015 at a station 3.9 km (2.4 mi) from the summit of the volcano. Note the characteristic delay in the arrival of the infrasound signal ~11.5 seconds after the seismic signal. This is due to the lower propagation velocity of sound in the atmosphere than in the Earth.
Date:July 21, 2015 12:00 AM
Photographer:Lyons, John
ArrayInfrasound, Seismic/GPS installation
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Caption:Jim Vallance (USGS) describes geologically-young tephra (ash) deposits from Makushin that outcrop alongside the runway at Dutch Harbor. Photo credit: Jess Larsen, AVO/UAFGI, July 2015.
Date:July 21, 2015 12:00 AM
Photographer:Larsen, J. F.
MakushinFieldwork operations, Infrastructure/ cultural, Stratigraphic section, Tephra
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Caption:Mount Cleveland's July 21, 2015, explosion, as seen by infrasound instruments at station CLES, located on the east flank of Cleveland volcano. Graphic by David Fee, AVO/UAF-GI.
Date:July 21, 2015 12:00 AM
Photographer:Fee, David
ClevelandEruption cloud/ plume/ column, Infrasound
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Caption:Redoubt Volcano steam plume as seen on flight towards Chisik Island.
Date:July 14, 2015 7:58 PM
Photographer:Iezzi, Alexandra
RedoubtSteam
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Caption:Slightly closer view of the meltwater source. On a summit flight, we were able to see the source of the meltwater stream. It appears to starts to the right of the dome where a fall face can be seen and continues down. After consulting with game, it is thought to be the result of water of elevated temperatures at the top of the dome.
Date:July 14, 2015 6:52 PM
Photographer:Iezzi, Alexandra
RedoubtDebris flow/mudflow/landslide/lahar, Dome, Flood, Steam
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Caption:On a summit flight, we were able to see the source of the meltwater stream. It appears to starts to the right of the dome where a fall face can be seen and continues down. After consulting with Game, it is thought to be the result of water of elevated temperatures at the top of the dome.
Date:July 14, 2015 6:50 PM
Photographer:Iezzi, Alexandra
RedoubtDebris flow/mudflow/landslide/lahar, Dome, Flood, Steam
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Caption:Rockfalls/glacial calving was seen and heard when we were at the Hut location about 6-8 times in the course of about 2 hours. If you are looking at the summit, this is to the left of the meltwater stream about halfway up the volcano. We could visually see the falls, and a few seconds later heard a thunderous noise.
Date:July 14, 2015 6:49 PM
Photographer:Iezzi, Alexandra
RedoubtDebris flow/mudflow/landslide/lahar
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Caption:A closer view of the Redoubt lava dome and recent debris flow.
Date:July 14, 2015 5:53 PM
Photographer:Read, Cyrus
RedoubtDebris flow/mudflow/landslide/lahar, Dome
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Caption:Recent debris flows and source to right of the lava dome on crater wall of Redoubt Volcano.
Date:July 14, 2015 5:52 PM
Photographer:Read, Cyrus
RedoubtDebris flow/mudflow/landslide/lahar
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Caption:Redoubt volcano, with steam plume rising from the 2009 lava dome, 14 Jul 2015. Photo courtesy of Alex Iezzi.
Date:July 14, 2015 3:35 PM
Photographer:Iezzi, Alexandra
RedoubtCaldera/crater, Debris flow/mudflow/landslide/lahar, Dome, Flood
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Caption:Shishaldin, as viewed from 32,000 feet on June 16, 2015.
Date:June 16, 2015 7:04 PM
Photographer:Anonymous
ShishaldinSteam
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Caption:Pavlof Vocano, taken by Bridget of TetraTech in Juneau from an Alaska Airlines Jet.
Date:June 14, 2015 8:25 PM
Photographer:Read, Cyrus
Pavlof
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Caption:Cleveland, taken from an Alaska Airlines jet enroute to Adak.
Date:June 14, 2015 7:40 PM
Photographer:Read, Cyrus
Cleveland
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Caption:UV camera and MultiGAS measurements near the summit of Augustine, 14 June 2015. USGS MultiGAS configured for soil CO2 flux measurements.
Date:June 14, 2015 2:58 PM
Photographer:Kelly, Peter
AugustineFieldwork operations, Fumarolic activity, People in action, Steam
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Caption:UV camera and MultiGAS measurements near the summit of Augustine, 14 June 2015. View of SE moat fumarole and portable MultiGAS (small box on snow in center-right part of image).
Date:June 14, 2015 11:24 AM
Photographer:Kelly, Peter
AugustineFieldwork operations, Fumarolic activity, People in action, Steam
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Caption:UV camera and MultiGAS measurements near the summit of Augustine, 14 June 2015. MultiGAS sampling location to measure H2O, CO2, SO2 and H2S levels in the plume emitted from the SE moat fumarole on Augustine.
Date:June 14, 2015 11:17 AM
Photographer:Kelly, Peter
AugustineFieldwork operations, Fumarolic activity, People in action, Steam
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