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ImageDetailsVolcanoesKeywords
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Caption:September 2, 2022 WorldView-3 satellite image of the active lava flow at Great Sitkin Volcano. The lava has been eruption since July 2021 and has filled most of the summit crater and overflowed the crater rim in four locations to form lobes >1 km (3280 ft) in length. The lava continues to spread into the intracaldera glacier to the east, but much of the active lava (central, gray and steaming zone with steep margins ~500 m or ~1640 ft in diameter) is now flowing over the top of the earlier flow (smoother black surface ~1.1 km or ~3600 ft in diameter).
Date:September 2, 2022 11:00 PM
Photographer:Dietterich, Hannah
Great Sitkin
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Caption:This key digital repeater site in the Tugamak Range, north Unimak Island, relays data from the Shishaldin and Westdahl monitoring networks. The site seems to be a magnet for clouds - during one recent 2-week period the webcam showed only 8 hours of clear(ish) weather - which can pose a challenge for field techs trying to complete repairs!
Date:August 29, 2022 6:44 PM
Photographer:Boyce, Ellie
Shishaldin, WestdahlFieldwork operations, Seismic/GPS installation
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Caption:AVO field tech Wyatt Mayo waiting for a helicopter pickup after completing radio upgrades to digital repeater at Deer Island near King Cove. This site repeats seismic, GPS, webcam and tiltmeter data from monitoring networks at Pavlof and Shishaldin volcanoes
Date:August 26, 2022 4:29 PM
Photographer:Boyce, Ellie
Pavlof, ShishaldinFieldwork operations, People in action, Seismic/GPS installation
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Caption:Explosive activity at Pavlof on August 26, 2022
Date:August 26, 2022 11:25 AM
Photographer:Izbekov, Pavel
PavlofEruption cloud/ plume/ column
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Caption:Explosive activity at Pavlof Volcano on August 26, 2022
Date:August 26, 2022 11:23 AM
Photographer:Izbekov, Pavel
PavlofEruption cloud/ plume/ column
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Caption:Overflight video of the explosive activity at Pavlof on August 26, 2022
Date:August 26, 2022 12:00 AM
Photographer:Izbekov, Pavel
PavlofEruption cloud/ plume/ column
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Caption:Eruption of ash plume caught on Semisopochnoi CEPE webcam on August 21, 2022.
Date:August 22, 2022 12:00 AM
Photographer:
SemisopochnoiEruption cloud/ plume/ column, Volcano
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Caption:Ash plume from the North Cerberus crater at Semisopochnoi 9 minutes after the start of the eruption. This event was the first confirmed ash emission since June 12, 2022, and resulted in an increase in the color code at Semisopochnoi to ORANGE.
Date:August 21, 2022 9:56 PM
Photographer:Loewen, Matt
SemisopochnoiEruption cloud/ plume/ column
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Caption:Emergent ash plume from the North Cerberus crater at Semisopochnoi. This event was the first confirmed ash emission since June 12, 2022, and resulted in an increase in the color code at Semisopochnoi to ORANGE.
Date:August 21, 2022 9:48 PM
Photographer:Loewen, Matt
SemisopochnoiEruption cloud/ plume/ column
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Caption:Volcanic bomb in the January 19,2022 lahar generated by eruptive activity at Pavlof Volcano.
Date:August 21, 2022 4:38 PM
Photographer:Izbekov, Pavel
PavlofBomb, Debris flow/mudflow/landslide/lahar
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Caption:Volcanic bomb in the January 19,2022 lahar generated by eruptive activity at Pavlof Volcano.
Date:August 21, 2022 4:37 PM
Photographer:Izbekov, Pavel
PavlofBomb, Debris flow/mudflow/landslide/lahar
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Caption:Volcanic bomb in the January 19,2022 lahar generated by eruptive activity at Pavlof Volcano.
Date:August 21, 2022 4:35 PM
Photographer:Izbekov, Pavel
PavlofBomb, Debris flow/mudflow/landslide/lahar
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Caption:AVO-GI field team installing a new webcam at digital seismic site PS1A, southeast of Pavlof volcano. It is fairly straightforward to augment a digital site with new sensors, as long as there is surplus capacity in the power and telemetry systems.
Date:August 21, 2022 2:00 PM
Photographer:Izbekov, Pavel
Pavlof, Pavlof SisterFieldwork operations, People in action, Seismic/GPS installation
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Caption:Low-level ash emissions from Pavlof Volcano visible from Cold Bay where AVO field crews are working on regional geophysics station maintenance.
Date:August 18, 2022 9:00 AM
Photographer:Haney, Matt
PavlofEruption cloud/ plume/ column
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Caption:Hanging out with furry friends on the beach at Augustine Lagoon Camp.
Date:August 17, 2022 9:54 PM
Photographer:Walowski, Kristina
AugustineJust for fun
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Caption:Looking east over the Augustine Lagoon camp provides amazing views of Augustine Lagoon and the Iniskin Peninsula and the Aleutian Range across the Cook Inlet.
Date:August 17, 2022 9:54 PM
Photographer:Walowski, Kristina
AugustineFieldwork operations
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Caption:Lupine season at Augustine. June 2022.
Date:August 17, 2022 9:54 PM
Photographer:Walowski, Kristina
Augustine
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Caption:Spectrogram for Westdahl/BHZ, noting the amusing smiley face in the waveform where the field crew landed a helicopter, idled for a few minutes, and then took off again.
Date:August 17, 2022 9:40 PM
Photographer:Kaufman, Max
WestdahlFieldwork operations, Seismic/GPS installation
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Caption:AVO staff repair the GPS antenna at Brown Peak digital repeater, south of Shishaldin Volcano.
Date:August 15, 2022 7:55 PM
Photographer:Boyce, Ellie
ShishaldinFieldwork operations, People in action, Seismic/GPS installation
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Caption:AVO field team wraps up a long day of upgrades at site SSLS, south Shishaldin Volcano, on Unimak Island. Seismic, GPS, power and telemetry equipment were all upgraded during this visit.
Date:August 14, 2022 8:25 PM
Photographer:Boyce, Ellie
ShishaldinFieldwork operations, People in action, Seismic/GPS installation
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Caption:WorldView-3 satellite near-infrared image of the lava flow field at Great Sitkin on August 14. Current dome growth is focued in the gray region in the center of the summit dome.
Date:August 14, 2022 12:00 AM
Photographer:Loewen, Matt
Great SitkinDome, Lava flow
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Caption:WorldView-3 satellite near-infrared image of the lava flow field at Great Sitkin on August 9.
Date:August 9, 2022 11:15 PM
Photographer:Loewen, Matt
Great SitkinDome, Lava flow
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Caption:WorldView-3 satellite shortwave infrared image of the lava flow field at Great Sitkin on August 9. Higher temperature areas are indicated in red at locations where lava advance is occurring: primarily in the center of the flow field but also on atleast 3 places on the flow margin highlighted by arrows.
Date:August 9, 2022 11:15 PM
Photographer:Loewen, Matt
Great SitkinDome, Lava flow
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Caption:New digital receive site in Perryville, AK, upgraded in collaboration with NSF's NOTA project, allows data from the south side of Veniaminof to be telemetered without traversing high elevation repeaters back to the original uplink site at Port Heiden. Use of this site was made possible by the Native Village of Perryville.
Date:August 9, 2022 8:17 PM
Photographer:Boyce, Ellie
VeniaminofFieldwork operations, Infrastructure/ cultural, Seismic/GPS installation
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Caption:Great Sitkin seen from the air, August 2022. Taken by Steve Hess, USGS.
Date:August 6, 2022 12:00 AM
Photographer:Hess, Steve
Great SitkinLava flow, Volcano
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