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AVO IMAGE DATABASE
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ImageDetailsVolcanoesKeywords
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Caption:Perspective satellite image view of Shishaldin Volcano from the west. Data is from the Advanced Land Imager aboard the EO-1 satellite. Base image is visible wavelength data and shortwave-infrared data is overlain in color showing the location of highly elevated surface temperatures in the summit crater. Snow and ice near the summit shows trace dusting of ash from low-level emissions. Dark streaks extending down the flanks from the summit are commonly observed during the summer at Shishaldin during non-eruptive periods and are not necessiarily related to the current low-level eruption.
Date:July 27, 2014 8:50 PM
Photographer:Schneider, Dave
ShishaldinVolcano
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Caption:Geyser along creek in Hot Springs valley.
Date:July 26, 2014 8:39 PM
Photographer:Coombs, Michelle
AkutanGeyser, Hot Springs, Volcano
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Caption:Akutan volcano from the NW on descent into Dutch Harbor.
Date:July 26, 2014 1:59 PM
Photographer:Kaufman, Max
AkutanCaldera/crater, Cinder cone
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Caption:Photo of two small landslide/avalanches at Iliamna - one on the east flank and one on the northeast. Photo taken July 26, 2014, by Max Kaufman (AVO/UAFGI).
Date:July 26, 2014 12:01 PM
Photographer:Kaufman, Max
ArrayDebris flow/mudflow/landslide/lahar
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Caption:Brian Jicha (University of Wisconsin-Madison) sampling youngest lava along north rim of Akutan caldera, with orange deposits of the 1,600-yr-B.P. caldera-forming eruption above.
Date:July 25, 2014 3:37 PM
Photographer:Coombs, Michelle
AkutanVolcano
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Caption:Photo of recent rockfall on Iliamna, taken at 2:16 pm AKDT on July 21, 2014 by Dennis Anderson.
Date:July 21, 2014 2:16 PM
Photographer:Anderson, Dennis
IliamnaAvalanche, Debris flow/mudflow/landslide/lahar, Glacier, Stratovolcano, Volcano
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Caption:A composite Landsat-8 image made by combining daytime visible wavelength data from July 19, 2014 with nighttime shortwave infrared (SWIR) data from July 21. This viewing perspective is from the southeast, and shows several small areas of enhanced SWIR emissions (the small colored squares) on the top of the intracaldera cone. The SWIR data are sensitive to high temperatures (hundreds of degrees Celsius) and highlight the persistently hot regions of the cone. Note that this is not eruptive activity, but rather a hot vent or cracks in the cone. The hot features are seen routinely in nighttime SWIR satellite images over the past months.
Date:July 21, 2014 8:00 AM
Photographer:Schneider, Dave
VeniaminofVolcano
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Caption:A composite Landsat-8 image made by combining daytime visible wavelength data from July 19, 2014 with nighttime shortwave infrared (SWIR) data from July 21. This viewing perspective is from the southeast, and shows several small areas of enhanced SWIR emissions (the small colored squares) on the top of the intracaldera cone. The SWIR data are sensitive to high temperatures (hundreds of degrees Celsius) and highlight the persistently hot regions of the cone. Note that this is not eruptive activity, but rather a hot vent or cracks in the cone. The hot features are seen routinely in nighttime SWIR satellite images over the past months.
Date:July 21, 2014 8:00 AM
Photographer:Schneider, Dave
VeniaminofVolcano
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Caption:Here is an image of Landsat-8 data of Cleveland collected on July 20, 2014 at 8:53 UTC. The shortwave-infrared (SWIR) data is in color, and shows elevated temperatures in the summit crater. The hottest pixel is about 300 degrees C. The SWIR data is overlain on thermal infrared data (in shades of grey: white is cold, black is hot), which shows low clouds obscuring the lower portion of the cone, and warm ground (black) around the crater. Note that the hottest region (shown in color) occupies a small portion of the summit crater.
Date:July 20, 2014 8:53 AM
Photographer:Schneider, Dave
ClevelandCaldera/crater
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Caption:Fresh rockfall on Iliamna's east side. Photo taken July 20, 2014, by Rick Stanley, USGS.
Date:July 20, 2014 8:29 AM
Photographer:Stanley, Rick
IliamnaAvalanche
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Caption:Shishaldin steams at sunrise, July 18, 2014.
Date:July 18, 2014 7:03 AM
Photographer:Alaska Volcano Observatory
ShishaldinSteam, Volcano
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Caption:Scenic Shishaldin steams at sunset, July 16, 2014.
Date:July 16, 2014 11:06 AM
Photographer:Alaska Volcano Observatory
ShishaldinSteam
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Caption:Active fumaroles on the north flank of Chiginagak volcano. Photo taken by Robert Dreeszen from his cabin at the outlet on Lower Ugashik Lake, approximately 50 kilometers (30 miles) north of the volcano. View is to the south.
Date:July 15, 2014 12:10 AM
Photographer:Dreeszen, Robert
ChiginagakFumarolic activity
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Caption:Composite false-color Landsat-8 satellite image from July 14, 2014 produced by combining the shortwave infrared (SWIR1), near infrared (NIR), and blue (visible) wavelength data. This color combination enhances the visualization of vegetation, exposed rocks, and snow (light blue). This is a rare partly cloudy satellite image and some of the volcanic features are indicated. No evidence of increased surface temperatures in response to the increased number of volcanic earthquakes that began in early June 2014.
Date:July 14, 2014 11:00 PM
Photographer:
SemisopochnoiVolcano
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Caption:This image shows Landsat-8 shortwave-infrared data (2.2 micron wavelength; colored areas show hot ground) and thermal-infrared data (shows cloud cover in white), both overlain on the Cleveland imagery in GoogleEarth Pro. Landsat image acquired on July 13, 2014. This data shows the summit crater at Cleveland remains quite hot. Note: the slight coloration on the flank is not indicative of warm temperatures but is a data-processing artifact.
Date:July 13, 2014 8:45 AM
Photographer:Schneider, Dave
ClevelandCaldera/crater, Volcano
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Caption:This image shows Landsat-8 shortwave-infrared data (2.2 micron wavelength; colored areas show hot ground) and thermal-infrared data (shows cloud cover in white), both overlain on the Cleveland imagery in GoogleEarth Pro. Landsat image acquired on July 13, 2014. This data shows the summit crater at Cleveland remains quite hot. The slight coloration on the flank is not indicative of warm temperatures but is a data-processing artifact.
Date:July 13, 2014 8:45 AM
Photographer:Schneider, Dave
ClevelandCaldera/crater, Volcano
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Caption:View of Shishaldin from AVO geophysical monitoring site SSLS on the southwest flank of the volcano. During a maintenance visit to Unimak Island in late June, good weather allowed the crew a good look at this active volcano. The upper flanks of the volcano are darkened by ash erupted over the last several months during low-level lava fountaining and small explosions deep in the summit crater. On some days, a plume of steam and gas can be seen in the AVO web camera images.
Date:June 28, 2014 9:04 PM
Photographer:Ketner, Dane
ShishaldinCaldera/crater, Cinder cone, Tephra
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Caption:View of Shishaldin from AVO geophysical monitoring site SSLS southwest of the volcano, on June 28, 2014. The upper flanks of the volcano are darkened by ash erupted over the last several months during low-level lava fountaining and small explosions deep in the summit crater. On some days, a plume of steam and gas can be seen in the AVO web camera images.
Date:June 28, 2014 7:45 PM
Photographer:Ketner, Dane
ShishaldinCaldera/crater, Cinder cone, Tephra
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Caption:View of Shishaldin from geophysical monitoring site BRPK southeast of the volcano. During a maintenance visit to Unimak Island in late June, good weather allowed the crew a good look at this active volcano. Here you can see a small puff of steam emerging from the summit crater. The upper flanks of the volcano are darkened by ash erupted over the last several months during low-level lava fountaining and small explosions deep in the summit crater. On some days, a plume of steam and gas can be seen in the AVO web camera images.
Date:June 28, 2014 3:36 PM
Photographer:Ketner, Dane
ShishaldinCaldera/crater, Cinder cone, Steam, Tephra
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Caption:Composite satellite image of Pavlof Volcano showing the extent of the lava flows on the northeast flank. The base image was collected by the Worldview-2 satellite on May 9, 2014 (prior to the onset of eruptive activity) and is overlain (in color) with a Landsat-8 thermal infrared image collected early in the morning on June 24, 2014. The thermal infrared sensor measured the heat given off by the still-warm lava flow. The length of the longest branch of the lava flow is about 5 km (3 miles). Note that the lava flow appears to have traveled under the ice on the upper flank of the volcano.
Date:June 24, 2014 8:15 AM
Photographer:Schneider, Dave
PavlofLava flow, Volcano
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Caption:Pair of satellite images of Unimak Island on June 21, 2014. On the left a NOAA AVHRR image showing strongly elevated surface temperatures at the summit of Shishaldin Volcano, consistent with ongoing low-level eruptive activity in the summit crater. On the right, from about 6 hours later, is a visible image of the island from a different satellite. Shishaldin is visible but there is no obvious sign of activity. A number of other volcanoes are visible as well. These are the kinds of images AVO scientists examine daily to evaluate the state of Alaska's 52 historically active volcanoes. For more information, explore our web site: www.avo.alaska.edu.
Date:June 21, 2014 12:00 AM
Photographer:Neal, Christina
Dutton, Frosty, Gilbert, Isanotski, Roundtop, Shishaldin, WestdahlLava fountaining, Stratovolcano, Volcano
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Caption:This is a screen capture of recent data (June 15-16, 2014) from one of the seismometers operating on Semisopochnoi Island, station CEAP (which stands for, Cerberus/Anvil Peak; Anvil Peak is the large flat-topped older volcanic landform near the station). One of many hundreds of volcano-tectonic earthquakes that have been recorded at this volcano in the past week is circled. Most of these are smaller than magnitude 1. When earthquakes like this begin to occur at higher rates at a volcano, this is called an earthquake swarm and it often indicates magma on the move. AVO seismologists are tracking this swarm closely, watching for changes in the location, depth, and other characteristics of the earthquakes. Short gaps in the data are probably due to glitches in the telemetry system. In addition to tracking earthquakes, AVO scientists examine satellite imagery of the volcano each day to look for evidence of ash or elevated surface temperatures. You can find out more about AVO and this volcano at our web site,www.avo.alaska.edu.
Date:June 15, 2014 12:00 AM
Photographer:Neal, Christina
SemisopochnoiSeismic/GPS installation
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Caption:View of Pavlof on June 9, 2014, as seen from Cold Bay, 35 miles to the southwest of the volcano. There is no sign of any significant ash production from the volcano, consistent with diminishing activity seen in seismic and satellite data. However, the summit poking above the clouds is clearly darkened with recent ashfall. AVO continues to see elevated surface temperatures, likely related to new lava flows on the northwest flank. Photo courtesy of James Gibson.
Date:June 9, 2014 12:00 AM
Photographer:Gibson, James
PavlofStratovolcano
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Caption:Possible ash cloud from Cleveland, generated by explosions on June 5, 2014. Cloud is about 140 km (89 mi) southwest of the volcano. NOAA-16 Thermal Infrared BTD image, 08:04:09 UTC (00:04:09 AKDT on June 5, 2014).
Date:June 5, 2014 8:04 AM
Photographer:Schneider, Dave
ClevelandEruption cloud/ plume/ column
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Caption:Pavlof in eruption, with lava fountaining and ash plume, early hours of June 4, 2014. View from Cold Bay. Photo courtesy of Robert Stacy.
Date:June 4, 2014 12:25 AM
Photographer:Stacy, Robert
PavlofEruption cloud/ plume/ column, Lava flow, Lava fountaining, Tephra
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Page modified: May 14, 2014 14:08
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