Using earthquakes, T waves, and infrasound to investigate the eruption of Bogoslof Volcano, Alaska

Geophysical Research Letters
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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.

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Additional publication details

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