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September 30, 2004

October 1, 2004 Explosion at Mount St. Helens

On October 1, 2004, an explosion in the crater of Mount St. Helens sent ash and water vapor several thousand feet into the air. It was the dramatic beginning of an eruption that continued for the next 3+ years. The explosion fractured Crater Glacier and hurled rocks for at least one-half mile across the western half of the glacier and the 1980-1986 lava dome. USGS

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Western side of Mount St. Helens crater, and dome, showing the glac...
September 29, 2004

Western side of Mount St. Helens crater, and dome, showing the glac...

Western side of Mount St. Helens crater, and dome, showing the glacier forming at the base of the dome.

Close-in view of south side of Mount St. Helens lava dome, as seen ...
September 29, 2004

Close-in view of south side of Mount St. Helens lava dome, as seen ...

Close-in view of south side of Mount St. Helens lava dome, as seen from the southeast, showing the dome and part of the glacier forming at the base of the dome. September 2005

Mount St. Helens crater and dome as seen from SugarBowl, on the NE ...
September 24, 2004

Mount St. Helens crater and dome as seen from SugarBowl, on the NE ...

Mount St. Helens crater and dome as seen from SugarBowl, on the NE flank of the volcano. September 2005

Acoustic Flow Monitor station (in housing), which detects ground vi...
August 30, 2004

Acoustic Flow Monitor station (in housing), which detects ground vi...

Berm from a 1997 lahar is visible along the channel. Mount St. Helens' east crater wall is visible in the background.

South side of Mount St. Helens lava dome, as seen from the east, sh...
August 29, 2004

South side of Mount St. Helens lava dome, as seen from the east, sh...

South side of Mount St. Helens lava dome, as seen from the east, showing the dome and part of the glacier forming at the base of the dome. August 29, 2005

Marrowstone Marine Field Station
April 28, 2004

Marrowstone Marine Field Station

Image of the Western Fisheries Research Center, Marrowstone Marine Field Station.  Looking east toward Puget Sound.

map of western U.S.showing sagebrush-dominated ecoregions
March 15, 2003

Sagebrush-dominated ecoregions

Sagebrush-dominated ecoregions in the western United States (sagebrush cover types shown in various shades of yellow, pink, and blue-grey).

June 27, 2002

PubTalk 6/2002 — Finding Elusive Earthquake Faults

New Mapping Techniques Reveal Potential Seismic Sources Beneath Seattle

By Richard J. Blakely, Geophysicist and Ralph A. Haugerud, Geologist

 

  • Geophysical methods reveal "the landscape beneath the landscape"
  • Why does the Seattle Fault exist, and why is it so hard to locate and map?
  • LIDAR imagery can
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landslide on the side of a cliff with a house at the top of the cliff, looking up at the house
December 31, 1997

Seattle Area Monitoring site

Photograph showing the scar left by a landslide on a hillside above the Burlington Northern Santa Fe Railway in Everett, Washington.

Landslide came across a road in Seattle, into a house on the side of a cliff
December 31, 1997

Seattle Area Monitoring site

Photograph showing a house that was damaged by a 1997 landslide along Perkins Lane in Seattle, Washington.

Landslide starting on the side of a cliff in the Seattle Area
December 31, 1997

Seattle Area Monitoring site

Photograph showing head of a landslide in 1997 that eventually destroyed several homes near the south end of Perkins Lane in Seattle, Washington.