Iliamna volcano (Alaska): seismic activity continues to increase, alert level raised to yellow
Saturday Mar 10, 2012 08:28 AM | BY: TOMPFEIFFER
Today, AVO has raised the Aviation Color Code to YELLOW and Alert Level to ADVISORY at Iliamna Volcano following a sustained increase in seismic activity over the past 3 months.
Current activity is characterized by numerous earthquakes that have varied in their number and magnitude over the past week. This sustained seismic activity does not mean that an eruption is imminent or certain. A similar seismic swarm was detected in 1996/1997 that was likely related to an intrusion of magma at depth did not culminate in an eruption.
(Alaska Volcano Observatory)
Friday, Mar 09, 2012
Since the middle of January 2012, seismic activity at Iliamna volcano has increased with more than usual numbers of earthquakes greater than magnitude 2. ... [more]