Spurr volcano (Alaska): increased seismic activity of uncertain origin

Mi, 16. Jan 2013, 10:15
10:15 AM | VON: T
Seismic recording CKT station on 15 Jan (AVO)
Seismic recording CKT station on 15 Jan (AVO)
Seismic recording CKT station on 16 Jan (AVO)
Seismic recording CKT station on 16 Jan (AVO)
A series of pulsating signals occurred on seismograms at Mount Spurr volcano (AK) earlier on 15 Jan, earthquake-report.com mentions.
What they represent is unclear. They could have been generated by any type of fluid movement including wind or water.
Debris flows have been not uncommon at Mount Spurr since the onset of thermal unrest at the volcano in 2004 and regional seismicity has been elevated near the volcano for several months.

Vorherige Nachrichten

Mi, 27. Jun 2012, 06:00
AVO reported that a minor increase in seismicity at Spurr was detected at about 0500 on 25 June, lasted about 45 minutes, and was characterized by several discrete M1earthquakes. The signals recorded were consistent with seismic energy generated by an energetic flow of water, possibly indicating a glacial outburst flood on the lower S flank. The next day seismic levels had declined to near background and no additional flowage signals were observed. ... Read all
Mi, 4. Jan 2006, 06:00
Seismicity remained above background levels at Spurr during 30 December to 6 January. Clear satellite and web camera views of the volcano showed no unusual activity. Spurr remained at Concern Color Code Yellow. ... Read all
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