thumbnail

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

Geophysical Research Letters

By:
https://doi.org/10.1029/2018GL078457

Links

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

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
Edition:
Online First
Year Published:
2018
Language:
English
Publisher:
American Geophysical Union
Contributing office(s):
Volcano Science Center
Country:
United States
State:
Alaska
Other Geospatial:
Bogoslof Volcano