Last update: Fri Nov 20 11:13:01 PST 2009
Number of earthquakes used in this computation: 13394
List of all earthquakes occurring at Mt. St. Helens since 10 - 20 , 1999 .
|
|
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.
|
|
