A shallow slow slip event in 2018 in the Semidi segment of the Alaska subduction zone detected by machine learning
A shallow slow slip event in 2018 in the Semidi segment of the Alaska subduction zone detected by machine learning
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机器学习检测到 2018 年阿拉斯加俯冲带塞米迪段发生的浅层慢滑事件
DOI:
10.1016/j.epsl.2023.118154
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发表时间:
2023
影响因子:
5.3
通讯作者:
Schwartz, Susan Y.
中科院分区:
文献类型:
--
作者:
He, Bing;Wei, XiaoZhuo;Wei, Meng;Shen, Yang;Alvarez, Marco;Schwartz, Susan Y.
Slow slip events (SSEs) have been discovered at shallow depth near the trench in some subduction zones and have been linked to the triggering of large earthquakes and the absence of tsunami. These shallow SSEs are invariably submarine, making it difficult to observe their temporal and spatial extent. Here, we report a shallow SSE in late 2018 near the west Semidi segment of the Alaska subduction zone, up-dip of and preceding the Mw 8.2 Chignik earthquake on July 29th, 2021. The SSE was detected in data from an offshore array of seafloor pressure gauges by a machine learning method. This detection is supported by the spatial pattern of simulated SSE deformation, the increased seismicity after the SSE in the positive Coulomb stress change area, the lack of shallow slip in Chignik earthquake, and the absence of a sizable tsunami following the Chignik earthquake. Our method has the potential to transform the way offshore SSEs are detected and to improve tsunami hazard assessment in subduction zones.
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DOI:
--
发表时间:
2013
期刊:
影响因子:
--
作者:
M. Vallée;J. Nocquet;J. Battaglia;Y. Font;M. Segovia;M. Régnier;P. Mothes;P. Jarrín;D. Cisneros;Sandro Vaca;H. Yepes;X. Martin;N. Béthoux;M. Chlieh
通讯作者:
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DOI:
10.1029/2018jb017211
发表时间:
2019
期刊:
Journal of Geophysical Research: Solid Earth
影响因子:
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通讯作者:
E. Todd
影响因子:
3.1
作者:
Wei, XiaoZhuo;Shen, Yang;Caplan‐Auerbach, Jacqueline;Morgan, Julia K.
通讯作者:
Morgan, Julia K.
DOI:
10.1029/2019jb018285
发表时间:
2019
期刊:
Journal of Geophysical Research: Solid Earth
影响因子:
--
作者:
J. Gomberg;S. Hautala;P. Johnson;S. Chiswell
通讯作者:
S. Chiswell
影响因子:
3.7
作者:
E. Montgomery‐Brown;E. Syracuse
通讯作者:
E. Syracuse