Mount St. Helens
Mount St. Helens in Washington is the most active volcano in the Cascade Range. Before renewed activity in the fall of 2004, its most recent series of eruptions had begun in 1980 when a large landslide and powerful explosive eruption created a large crater, and ended 6 years later after more than a dozen extrusions of lava built a dome in the crater. Larger, longer-lasting eruptions have occurred in the volcano's past and are likely to occur in the future. Scientists with the U.S. Geological Survey and University of Washington continue to closely monitor Mount St. Helens for signs of renewed activity. [Modified from U.S. Geological Survey Fact Sheet 036-00, Online Version 1.0]
- Take the Mount St. Helens 30th Anniversary Quiz.
- See the slide shows on the 1980 eruption: Slide Set 1 (March–June 1980) and Slide Set 2 (May 18, 1980–May 13, 1981).
- Watch the mountain through the U.S. Forest Service Mount St. Helens VolcanoCam, located at Johnston Ridge Observatory about 5 miles from the volcano. Images are updated about every 5 minutes.
ONLINE PUBLICATIONS
Roadside geology of Mount St. Helens National Volcanic Monument and vicinity
[PDF, 56.7 MB; PDF of Part 1, 28.0 MB; PDF of Part 2, 28.6 MB] Cascades volcanoes—Processes and hazards: A five day field trip, Mount Baker to Mount St. Helens [PDF, 10.3 MB] Mount St. Helens ash—Properties and possible uses [PDF, 14 MB]
Postglacial influence of volcanism on the landscape and environmental history of the Puget Lowland, Washington
[PDF, 591 KB] The 1980 eruption of Mount St. Helens, Washington [PDF, 1.0 MB] Ash from the May 18, 1980, eruption of Mount St. Helens—maps showing bulk density, depth of uncompacted ash
[2 sheets], time of first ashfall, kilograms of ash per square meter, and depth of rain-compacted ash [PDF, 19.1 MB] Targeting geothermal exploration sites in the Mount St. Helens area using soil mercury survey [PDF, 8.3 MB] Mount St. Helens—A bibliography of geoscience literature, 1882–1986 [author index, PDF, 26.4 MB;
subject index, PDF, 23.6 MB] A pre-1980 eruption description of Mount St. Helens [PDF, 1.7 MB] Newsletter Articles Observations of glacial, geomorphic, biologic, and mineralogic developments in the crater of Mount St. Helens, Washington [PDF, 5.0 MB] Field sketches of late-1840s eruptions of Mount St. Helens, Washington [PDF, 9.3 MB] Mount St. Helens Anniversary Issue: Washington Geologic Newsletter [PDF, 9.5 MB] Geologic guide to the Monitor Ridge climbing route, Mount St. Helens, Washington [PDF, 5.7 MB] MOUNT ST. HELENS ERUPTION ISSUE: Washington Geologic Newsletter [PDF, 7.2 MB] There are many other articles. To see them, go to the Online Catalog and search on Mount St. Helens. MOUNT ST. HELENS VOLCANIC HAZARDSGENERAL INFORMATION - Mount St. Helens National Volcanic Monument
A 110,000-acre monument run by the U.S. Forest Service - Mount St. Helens VolcanoCam
A live camera run by the U.S. Forest Service and located at Johnston Ridge Observatory, about five miles from the volcano - NASA Infrared Images of Mount St. Helens—Sept. 30, 2004
Taken one day before the October 1, 2004 steam eruption - NASA Infrared Images of Mount St. Helens—Oct. 12, 2004
Showing hotspots in the crater - U.S. Geological Survey Earthshots—Satellite Images of Mount St. Helens
- Cascades Volcano Observatory—Mount St. Helens
Information on Mount St. Helens, its past history, ongoing research, the 1980 eruption, and current activity. The Observatory is run by the U.S. Geological Survey - Fact Sheet: Mount St. Helens—From the 1980 Eruption to 2000
A Fact Sheet from the U.S. Geological Survey - Eruptions of Mount St. Helens—Past, Present, and Future
The online edition of a U.S. Geological Survey publication - Mount St. Helens Institute
A private, not-for-profit organization dedicated to improving stewardship and appreciation of the dynamic natural environment in which we live
Mount St. Helens Anaglyph 
Click below for full-size anaglyph:
175 dpi [305 Kb]
96 dpi [120 Kb]
This anaglyph, which can be seen in 3-D using red/green or red/blue glasses, was created by Terry Curtis, DNR's Photogrammetry Supervisor (360-902-1210) and prepared for the Internet by Pat Pringle. Please note that the red lens should be over the left eye. The view is looking down into the crater with north to the right. To compare the anaglyph to a topographic map of Mount St. Helens, visit TopoZone. Sources of anaglyph glasses:
3-D Glasses Vendors, a list maintained by Jet Propulsion Laboratory Metadata on original photos used:
DNR Project SW-H-96
Flown July 8, 1996, Lear Jet, at a height of 43,560 feet (~8 miles) above average ground elevation
Camera focal length: 8.25 inches nominal (214.034 mm calibrated)
Anaglyph created using Adobe Photoshop
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DGER News, Vol. 1, No. 3/4, Fall 2004
(1,044KB
PDF)
Washington Geologic Newsletter, Vol. 8, No. 3, July 1980
(2,820KB
PDF)
Washington Geologic Newsletter, Vol. 8, No. 4, October 1980
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