Using earthquakes, T waves, and infrasound to investigate the eruption of Bogoslof Volcano, Alaska
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Abstract
The 2016‐2017 eruption of Bogoslof volcano, a submarine stratovolcano in the Bering Sea, produced 70 discrete explosive eruptions over 8 months. With no local monitoring data, activity was seismically recorded on nearby islands 50‐100 km away, limiting the detection and resolution of seismic observations. We construct a matched filter catalog of 3199 events from 49 earthquake families, many of which occurred with hydroacousticT waves of varying strength. We then use a 2D finite difference model to show that hydroacoustic amplitudes should decrease with increased source depth beneath the edifice and leverage each family's seismically recorded T wave amplitude as a proxy for source depth, which we compare to regional infrasound data. This unique combination of using P and S waves to detect events, T waves as a proxy for depth, and infrasound for precise timing of emissions allows us to interpret the dynamics and evolution of the Bogoslof eruption.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Using earthquakes, T waves, and infrasound to investigate the eruption of Bogoslof Volcano, Alaska |
| Series title | Geophysical Research Letters |
| DOI | 10.1029/2018GL078457 |
| Volume | 45 |
| Issue | 14 |
| Year Published | 2018 |
| Language | English |
| Publisher | American Geophysical Union |
| Contributing office(s) | Volcano Science Center |
| Description | 8 p. |
| First page | 6918 |
| Last page | 6925 |
| Country | United States |
| State | Alaska |
| Other Geospatial | Bogoslof Volcano |
| Google Analytic Metrics | Metrics page |