Last update: Fri Oct 10 10:58:38 PDT 2008
Number of earthquakes used in this computation: 14017
List of all earthquakes occurring at Mt. St. Helens since 09 - 10 , 1998 .
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Guide
- Each point represents the sum of energy released by all earthquakes in a 60 day period.
- Energy is computed in 60 day time windows, every 30 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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