Mount St. Helens, Washington
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The following information is provided by the U.S. Geological Survey's Cascades Volcano Observatory and by the University of Washington's Geophysics Program. The U.S. Geological Survey and University of Washington monitor earthquakes and other activity at Mount St. Helens as part of the USGS Volcano Hazards Program. |
![]() Mount St. Helens Seismicity - Time vs. Depth Graph showing relationship between time and depth of earthquakes beneath Mount St. Helens from November 1997 through October 1998. In this graph, 0 depth is referenced to 1.5 kilometers (about 1 mile) below the current summit of Mount St. Helens (8,363 feet above sea level). |
For More Information:
Link to: Mount St. Helens Seismicity Information -- Link courtesy University of Washington Geophysics Program |
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