Thursday, February 5, 2009

The heartbeat of Redoubt...

summarized for the last ten days. The RSAM (Real-time Seismic Amplitude Measurement) plots shown above (click to enlarge) display the earthquake activity in the form of a frequency plot through time. This episode of unrest started 25 January and at that time the AVO elevated the status of the mountain to WATCH.

AFTERNOON UPDATE: a significant but short term increase in seismicity just occurred and it appears at the right-side of the RSAM plot above. (Note: this plot is updated in real time.) The AVO notes the burst in activity but reports no eruption.

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