Mount St. Helens, 35 years ago, Apr 15, 1980

From USGS Volcanoes:

Mount St. Helens, 35 years ago, Apr 15, 1980. “Scientists detect volcano ‘contractions’” prints The Oregonian newspaper (Portland, OR). Data telemetered to Vancouver from the continuously recording tiltmeter at the Timberline parking area show small but continuous bulging and shrinking. Geologists aren’t sure what this means. Mount St. Helens continues its “regular” pattern of earthquakes and steam eruptions.

Aerial image of small steam and ash eruption in the crater of Mount St. Helens. USGS image taken April 10, 1980.

[Material from USGS–CVO archives; In the Path of Destruction by Richard Waitt (available athttp://wsupress.wsu.edu/new-titles.html); The Oregonian newspaper (Portland, OR).]

More on Mount St. Helens athttp://volcanoes.usgs.gov/volcanoes/st_helens/; images at http://volcanoes.usgs.gov/volcanoes/st_helens/st_helens_multimedia_gallery.html.

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