Last update: Fri Nov 20 11:06:41 PST 2009
Number of earthquakes used in this computation: 302
List of all earthquakes occurring at Mt. St. Helens since 10-01, 2008.
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Guide
- Each point represents the sum of energy released by all earthquakes in a 14 day period.
- Energy is computed in 14 day time windows, every 7 days.
- Strain energy is plotted in ergs1/2.
- Green triangles, if shown, represent phreatic explosions.
- Cyan triangles, if shown, represent dome-building eruptions.
- Red triangles, if shown, represent explosive magmatic eruptions.
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