Monday, February 07, 2005

More activity at Mount St Helens

Last night the clouds cleared allowing the Volcanocam to record another bright flash from Mount St Helens at 01:13 local time. These bright flashes of light are believed to be caused by the lavadome fracturing and exposing fresh hot lava to the surface.

Below is an image of the flash, superimposed on a daytime photo of the mountain for reference, in order to locate the region where the flash eminated. The second image shows a seismic signal occuring just prior to the Volcanocam image of the flash. I have also posted a movie of the event here.

Credits: Original image, US Forest Service Volcanocam

Credit: The Pacific Northwest Seismograph Network


Anonymous Anonymous said...

Thanks again Darryl! Great work. I wasn't up to see the flash, but did notice the earthquake on the webicorders this morning, so was hoping you caught the event!

Keep up the great work! I am recording the day images whenever possible, but don't have an automated way to do it, so I miss some fairly large chunks of time.

2005-02-07, 5:40 p.m.  
Anonymous Anonymous said...

I had not before correlated these flashes with larger amplification seismic activity. It is exciting to see the two side-by-side. I love your blog, by the way! I don't have time to check PNSN and CVO regularly these days. Thanks for keeping us informed of the major happenings on MSH and elsewhere.

2005-02-07, 6:13 p.m.  

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