Co-eruptive tremor from Bogoslof volcano: seismic wavefield composition at regional distances
Co-eruptive tremor from Bogoslof volcano: seismic wavefield composition at regional distances
复制标题
博戈斯洛夫火山的共喷震颤:区域距离的地震波场组成
DOI:
10.1007/s00445-019-1347-0
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发表时间:
2020
影响因子:
3.5
通讯作者:
Mikesell, T. Dylan
中科院分区:
文献类型:
--
作者:
Haney, Matthew M.;Fee, David;McKee, Kathleen F.;Lyons, John J.;Matoza, Robin S.;Wech, Aaron G.;Tepp, Gabrielle;Searcy, Cheryl;Mikesell, T. Dylan
We analyze seismic tremor recorded during eruptive activity over the course of the 2016–2017 eruption of Bogoslof volcano, Alaska. Only regional recordings of the tremor wavefield exist for Bogoslof, making it a challenge to place the recordings in context with other eruptions that are normally captured by local seismic data. We apply a technique of time-frequency polarization analysis to three-component seismic data to reveal the wavefield composition of Bogoslof eruption tremor. We find that at regional distances, the tremor is dominated by P-waves in the band from 1.5 to 10 Hz. Using this information, along with an enriched Bogoslof earthquake catalog, we obtain estimates of average reduced displacement (DR) for eruption tremor during 25 of the 70 Bogoslof events.DRreaches as high as approximately 40 cm2for two of the major events, similar to other VEI~3 eruptions in Alaska. Overall, average reduced displacement displays a weak correlation to plume height during the first half of the 9-month-long eruption sequence, with a few notable exceptions. The two events with the highestDRvalues also generated measurable eruption tremor at very-long-periods (VLP) between 0.05 and 0.15 Hz.
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影响因子:
3.5
作者:
G. Tepp;R. Dziak;M. Haney;J. Lyons;C. Searcy;H. Matsumoto;J. Haxel
通讯作者:
J. Haxel
DOI:
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发表时间:
1994
期刊:
影响因子:
--
作者:
S. McNutt
通讯作者:
S. McNutt
DOI:
--
发表时间:
2015
期刊:
影响因子:
--
作者:
D. Eaton;Joshua P. Jones;E. Caffagni
通讯作者:
E. Caffagni
DOI:
--
发表时间:
1997
期刊:
影响因子:
--
作者:
U. Wegler;D. Seidl
通讯作者:
D. Seidl
影响因子:
3.5
作者:
J. Lyons;A. Iezzi;D. Fee;H. Schwaiger;A. Wech;M. Haney
通讯作者:
M. Haney