Spurr 2014/6
Start: June 2014 [1]
Stop: October 2014 [1]
Event Type: Not an eruption
- Glacier outburst flood [1]
- Seismicity with no confirmed eruption [1]
Description: From Cameron and others, 2017: "A swarm of low-frequency earthquakes began in early June, following a M3.8 earthquake 13 km (8 mi) west of Mount Spurr. A total of 300 earthquakes were located in this swarm, which ended in mid-October. A swarm in the same area occurred in late 2012. The cause of the swarm remains undetermined. In 2004, seismicity, surface heat flux, and gas emissions suggested a magmatic intrusion (Power, 2004; Neal and others, 2005; Coombs and others, 2006).
"At 20:20 UTC (11:20 a.m. AKDT) on September 10, the Spurr seismograph network recorded a signal interpreted by AVO seismologists as a glacial outburst flood. The flow appears as a single event lasting about 20 minutes. Similar events, but of longer duration, have been recorded at Mount Spurr on several occasions, most recently in 2012 (Herrick and others, 2014). AVO was unable to visually confirm the inferred outburst event."
"At 20:20 UTC (11:20 a.m. AKDT) on September 10, the Spurr seismograph network recorded a signal interpreted by AVO seismologists as a glacial outburst flood. The flow appears as a single event lasting about 20 minutes. Similar events, but of longer duration, have been recorded at Mount Spurr on several occasions, most recently in 2012 (Herrick and others, 2014). AVO was unable to visually confirm the inferred outburst event."
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References Cited
[1] 2014 Volcanic activity in Alaska - Summary of events and response of the Alaska Volcano Observatory, 2017
Cameron, C.E., Dixon, J.P., Neal, C.A., Waythomas, C.F., Schaefer, J.R., and McGimsey, R.G., 2017, 2014 Volcanic activity in Alaska - Summary of events and response of the Alaska Volcano Observatory: U.S. Geological Survey Scientific Investigations Report 2017-5077, 81 p., https://doi.org/10.3133/sir20175077.
full-text PDF 6.8 MB Complete Eruption References
2014 Volcanic activity in Alaska - Summary of events and response of the Alaska Volcano Observatory, 2017
Cameron, C.E., Dixon, J.P., Neal, C.A., Waythomas, C.F., Schaefer, J.R., and McGimsey, R.G., 2017, 2014 Volcanic activity in Alaska - Summary of events and response of the Alaska Volcano Observatory: U.S. Geological Survey Scientific Investigations Report 2017-5077, 81 p., https://doi.org/10.3133/sir20175077.
full-text PDF 6.8 MB Renewed seismic unrest at Mount Spurr Volcano, Alaska in 2004: Evidence for a magmatic intrusion, 2004
Power, J.A., Stihler, S.D., Dixon, J.P., Moran, S.C., Caplan-Auerbach, J., Prejean, S.G., McGee, K., Doukas, M.P., and Roman, D.C., 2004, Renewed seismic unrest at Mount Spurr Volcano, Alaska in 2004: Evidence for a magmatic intrusion: Eos Trans., AGU, 85(47), Fall meeting supplement, Abstract number S51A-0143.
2002 Volcanic activity in Alaska and Kamchatka: Summary of events and response of the Alaska Volcano Observatory, 2005
Neal, C.A., McGimsey, R.G., and Girina, Olga, 2005, 2002 Volcanic activity in Alaska and Kamchatka: Summary of events and response of the Alaska Volcano Observatory: U.S. Geological Survey Open-File Report 2004-1058, 55 p., available online at http://pubs.usgs.gov/of/2004/1058/.
full-text PDF 5.15 MB 
Geothermal disruption of summit glaciers at Mount Spurr Volcano, 2004-6: an unusual manifestation of volcanic unrest, 2006
Coombs, M.L., Neal, C.A., Wessels, R.L., and McGimsey, R.G., 2006, Geothermal disruption of summit glaciers at Mount Spurr Volcano, 2004-6: an unusual manifestation of volcanic unrest: U.S. Geological Survey Professional Paper 1732-B, 33 p., available at http://pubs.usgs.gov/pp/pp1732/pp1732b/index.html .
2012 Volcanic activity in Alaska: Summary of events and response of the Alaska Volcano Observatory, 2014
Herrick, J.A., Neal, C.A., Cameron, C.E., Dixon, J.P., and McGimsey, R.G., 2014, 2012 Volcanic activity in Alaska: Summary of events and response of the Alaska Volcano Observatory: U.S. Geological Survey Scientific Investigations Report 2014-5160, 82p., http://dx.doi.org/10.3133/sir20145160.
