Characterization of seismic events during the 2009 eruption of Redoubt Volcano, Alaska

Ketner, D. M.; Power, John A.

doi:10.1016/j.jvolgeores.2012.10.007

Cited by 39 publications

(31 citation statements)

References 23 publications

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“…The tremor from February 5 to 9 lacked the lower (~1 Hz) frequencies of the January episodes. The first seismic swarm (contrasted with the earlier periods that were combined tremor and discrete events) occurred February 26-27 (Buurman et al, 2013;Ketner and Power, 2013). At this time the frequency spectrum ranged from~1 to 15 Hz again .…”

Section: Eruption Chronologymentioning

confidence: 96%

“…The episodes were composed of a mix of high amplitude tremor superimposed over discrete events . Spectral analysis by Power et al (2013) and Ketner and Power (2013) show that peak frequencies in these periods were between 1 and 6 Hz, although frequencies up to 15 Hz were observed. The seismic activity corresponded with high SO 2 levels (Werner et al, 2013;Schaefer, 2012), and occurred alongside noticeable volcanic-related activity such as mudflows, collapse holes and increased gas emissions (Schaefer, 2012;Bleick et al, 2013).…”

Section: Eruption Chronologymentioning

confidence: 97%

See 1 more Smart Citation

Duration–amplitude relationships of volcanic tremor and earthquake swarms preceding and during the 2009 eruption of Redoubt Volcano, Alaska

DeRoin

McNutt

Thompson

2015

Journal of Volcanology and Geothermal Research

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Section: Eruption Chronologymentioning

confidence: 96%

Section: Eruption Chronologymentioning

confidence: 97%

Duration–amplitude relationships of volcanic tremor and earthquake swarms preceding and during the 2009 eruption of Redoubt Volcano, Alaska

DeRoin

McNutt

Thompson

2015

Journal of Volcanology and Geothermal Research

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“…• Daily (and often, hourly) analysis and evaluation of seismic data (Buurman and others, 2013;Hotovec and others, 2013;Ketner and Power, 2013). …”

Section: Explosive and Effusive Phase-march 15-april 4 2009mentioning

confidence: 99%

2009 Volcanic activity in Alaska, Kamchatka, and the Kurile Islands: Summary of events and response of the Alaska Volcano Observatory

McGimsey¹,

Neal²,

Гирина³

et al. 2014

Scientific Investigations Report

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For more information on the USGS-the Federal source for science about the Earth, its natural and living resources, natural hazards, and the environment, visit http://www.usgs.gov or call 1-888-ASK-USGS.For an overview of USGS information products, including maps, imagery, and publications, visit http://www.usgs.gov/pubprodTo order this and other USGS information products, visit http://store.usgs.gov Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.Although this information product, for the most part, is in the public domain, it also may contain copyrighted materials as noted in the text. Permission to reproduce copyrighted items must be secured from the copyright owner.Suggested citation: McGimsey, R.G., Neal, C.A., Girina, O.A., Chibisova, Marina, and Rybin, Alexander, 2014, 2009 Volcanic activity in Alaska, Kamchatka, and the Kurile Islands-Summary of events and response of the Alaska Volcano Observatory: U.S. Geological Survey Scientific Investigations Report 2013-5213, 125 p., http://dx.doi.org/10.3133/sir20135213. ISSN -2328-0328 (online)

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“…In addition to the 37 events of sufficient size for the automated catalogue, there are a few hundred smaller events that can be observed on summit stations (Ketner and Power, 2013). The events are generally small, lack clear S arrivals (Fig.…”

Section: March 29 Swarmmentioning

confidence: 99%

“…3F). Ketner and Power (2013) examine the larger population of events too small to be recorded beyond the summit stations. Though the earthquakes are generally small, they occur at higher rates (up to 191 events per hour) than any of the other swarms (Table 1).…”

Section: May 2 Swarmmentioning

confidence: 99%

The seismicity of the 2009 Redoubt eruption

Buurman

West

Thompson

2013

Journal of Volcanology and Geothermal Research

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Redoubt Volcano erupted in March 2009 following 6 months of precursory seismic activity. The 4.5-monthlong eruptive sequence was accompanied by phreatic and magmatic explosions, periods of steady dome growth, lahars, seismic swarms, extended episodes of volcanic tremor and changes in the background seismicity rate. This study presents a seismic chronology of the eruption and places it in context with the variety of other geological and geophysical data that were recorded during the eruptive period. We highlight 6 notable seismic swarms, 3 of which preceded large explosions. The swarms varied from an hour to several days in duration, and contained tens to over 7000 earthquakes. Many of the swarms were dominated by low frequency type earthquakes that contained families of repeating events. Seismic tremor varied considerably in frequency, amplitude and duration during the eruption with distinct characteristics accompanying different types of volcanic activity. The explosion signals during March 23-24 were the most energetic, and the explosions on March 26-29 contained proportionally more low frequency energy (0.033-0.3 Hz). Two seismic stations were particularly well-suited to recording lahars that flowed down the Drift River valley. Data from these stations showed that lahars were generated by the majority of the explosion events, as well as during the continuous eruptive activity on March 29 when no large explosions occurred. We also examine the seismicity which occurred outside of the explosion and swarm episodes, and find several families of repeating VT earthquakes which begin shortly before the April 4 explosion and that continue through May 2009, locating between 3 and 6 km below sea level.

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Characterization of seismic events during the 2009 eruption of Redoubt Volcano, Alaska

Cited by 39 publications

References 23 publications

Duration–amplitude relationships of volcanic tremor and earthquake swarms preceding and during the 2009 eruption of Redoubt Volcano, Alaska

Duration–amplitude relationships of volcanic tremor and earthquake swarms preceding and during the 2009 eruption of Redoubt Volcano, Alaska

2009 Volcanic activity in Alaska, Kamchatka, and the Kurile Islands: Summary of events and response of the Alaska Volcano Observatory

The seismicity of the 2009 Redoubt eruption

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