Use of CVO Material and Copyright Information

MSH80_volcanic_ash_with_helicopter_08-22-80.jpg
For weeks volcanic ash covered the landscape around the volcano and for several hundred miles downwind to the east. Noticeable ash fell in eleven states. The total volume of ash (before its compaction by rainfall) was approximately 0.26 cubic mile (1.01 cubic kilometers), or, enough ash to cover a football field to a depth of 150 miles (240 kilometers). In this photograph, a helicopter stirs up ash while trying to land in the devastated area.
USGS Photograph taken on August 22, 1980, by Lyn Topinka.
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MSH80_bear_tracks_in_ash_and_pumice_october_1980.jpg
Animals also made a comeback soon after the May 18, 1980 eruption. Many smaller animals, such as gophers, mice, frogs, fish, and insects were hibernating below ground or under water on May 18, 1980, and they survived the blast. Larger animals such as bear (whose tracks are shown here), elk, deer, and coyotes have been moving back into the area as their food supplies increase. A mountain goat has even been spotted high on the flanks of the volcano.
USGS Photograph taken in October 1980, by Lyn Topinka.
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MSH80_may18_ash_road_connell_washington_06-80.jpg
May 18, 1980 ash along the roadside, Connell, Washington.
USGS Photograph taken in June 1980 by Lyn Topinka.
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MSH80_may18_ash_connell_washington_06-80.jpg
May 18, 1980 ash, Connell, Washington.
USGS Photograph taken in June 1980 by Lyn Topinka.
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MSH80_volcanic_ash_collected_near_randle_1980s.jpg
Volcanic ash collected in Randle, Washington, located about 40 km NNE of Mount St. Helens. The north edge of the May 18, 1980, eruption cloud passed over Randle and deposited between 1 and 2 centimeters of ash on the community.
USGS Photograph taken by David Wieprecht.
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MSH04_volcanic_ash_10-01-04.jpg
Volcanic ash of the October 1, 2004 event.
USGS photograph by Carl Thornber.
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MSH04_volcanic_ash_600_microns_10-01-04.jpg
Volcanic ash of the October 1, 2004 event. Field of view is 600 microns.
USGS photograph by Carl Thornber.
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MSH04_ash_collector_on_shoestring_10-04-04.jpg
U.S. Geological Survey scientist installs buckets to collect any ash which might come that direction. This bucket is located on Shoestring Notch, on the southeast rim of Mount St. Helens.
USGS photograph taken on October 4, 2004, by John Pallister.
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MSH04_USGS_scientist_installs_ash_collectors_10-04-04.jpg
U.S. Geological Survey scientist installs buckets to collect any ash which might come that direction. Another Cascade Range volcano, Mount Adams, is in the background.
USGS photograph taken on October 4, 2004, by John Pallister.
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MSH04_ash_collector_at_muddy_river_10-04-04.jpg
U.S. Geological Survey ash collector at Muddy River, on the southeast side of Mount St. Helens.
USGS photograph taken on October 4, 2004, by John Pallister.
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MSH04_USGS_scientist_collects_roof_ash_10-04-04.jpg
U.S. Geological Survey scientist, Dan Gooding, collects ash from the October 4, 2004 Mount St. Helens event.
USGS photograph taken on October 4, 2004, by John Pallister.
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MSH04_ash_collecting_from_railing_10-04-04.jpg
U.S. Geological Survey scientist, Dan Gooding, collects ash from the October 4, 2004 Mount St. Helens event.
USGS photograph taken on October 4, 2004, by John Pallister.
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MSH04_ash_on_road_with_car_10-04-04.jpg
U.S. Geological Survey vehicle travels ash-covered road.
USGS photograph taken on October 4, 2004, by John Pallister.
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MSH04_USGS_scientist_ash_collector_cedar_creek_10-06-04.jpg
USGS Hydrologist Jon Major installs ash collection station at Cedar Creek.
USGS Photograph taken on 6 October 2004 by John Pallister.
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MSH04_ash_collection_USGS_scientist_10-10-04.jpg
USGS scientist collection ash sample.
USGS Photograph taken on 10 October 2004, by Cynthia Gardner.
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MSH04_USGS_scientist_collects_ash_samples_11-04-04.jpg
U.S. Geological Survey scientist, Carl Thornber, collects ash from north of Mount St. Helens (in the background).
USGS photograph taken on November 4, 2004.
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MSH04_ash_layers_snow_south_ridge_11-04-04.jpg
Ash layers fallen on snow, at South Ridge.
USGS photograph on November 4, 2004, by Carl Thornber.
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MSH04_ash_collection_snow_south_ridge_11-04-04.jpg
Collecting ash fallen on clean snow, at South Ridge.
USGS photograph on November 4, 2004, by Carl Thornber.
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MSH05_ash_collection_glacier_helicopter_04-10-05.jpg
Collecting ash, East Crater Glacier, using helicopter and the Jaws II Dredge.
USGS photograph on April 10, 2005, by Dan Dzurisin.
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MSH05_ash_collection_jawsII_dredge_04-10-05.jpg
Ash Collection, East Crater Glacier, Jaws II Dredge.
USGS photograph on April 10, 2005, by John Pallister.
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MSH05_ash_collection_from_east_crater_glacier_04-10-05.jpg
Ash Collection from East Crater Glacier, using Jaws II Dredge.
USGS photograph on April 10, 2005, by John Pallister.
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MSH05_ash_collection_sample_east_crater_glacier_04-10-05.jpg
Ash Collection from East Crater Glacier, using Jaws II Dredge.
USGS photograph on April 10, 2005, by John Pallister.
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MSH05_ash_collection_dredge_tracks_04-10-05.jpg
Track marks of Jaws II Dredge on the East Crater Glacier. Each track is a little over 2 feet wide.
USGS photograph on April 10, 2005, by Steve Schilling.
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MSH05_east_crater_glacier_dredge_tracks_04-10-05.jpg
East Crater Glacier with track marks of Jaws II Dredge used to collect ash. Each track is a little over 2 feet wide.
USGS photograph on April 10, 2005, by Steve Schilling.
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MSH05_ash_collection_spider_landing_on_dome_08-10-05.jpg
Ash Collection Spider landing on new dome below talus off of the spine.
USGS photograph on August 10, 2005, by Cynthia Gardner and Matt Logan.
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MSH05_ash_collection_spider_sling_08-10-05.jpg
Slinging out the Ash Collection Spider for placement on the new dome.
USGS photograph on August 10, 2005, by Cynthia Gardner and Matt Logan.
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MSH05_ash_collection_spider_slinging_08-10-05.jpg
Slinging out the Ash Collection Spider for placement on the new dome.
USGS photograph on August 10, 2005, by Cynthia Gardner and Matt Logan.
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MSH05_ash_collection_spider_location_08-10-05.jpg
Location on the new dome (yellow circle) of the Ash Collection Spider.
USGS photograph on August 10, 2005, by Cynthia Gardner and Matt Logan.
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MSH05_ash_collection_spider_with_ballistic_08-19-05.jpg
Ash Collection Spider (Petrology Spider). The Spider was designed to capture not only tephra, but plastic webbing was designed to melt and trap hot material such as small dacite ballistic visible on the left. On the right hot shards and ash were collected.
USGS photograph on August 19, 2005, by Carl Thornber.
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MSH05_ash_collection_spider_ballistic_08-19-05.jpg
Ballistic captured in Ash Collection Spider. The ballistic was cold when it landed (no melting of webbing).
USGS photograph on August 19, 2005, by Tristan Herriott.
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MSH05_ash_collection_spider_hot_shards_08-19-05.jpg
Hot shards melted into the Ash Collection Spider. Scale along top is in centimeters.
USGS photograph on August 19, 2005, by Tristan Herriott.
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MSH05_ash_collection_spider_on_dome_09-14-05.jpg
Ash Collection Spider ("Petrology Spider") landing on the south side of old dome.
USGS Photograph taken on September 14, 2005, by John Pallister.
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