Azimuthal Seismic Anisotropy in the Upper Crust of the Japanese Islands Induced by the 2011 Tohoku‐Oki Megathrust Earthquake

Azimuthal Seismic Anisotropy in the Upper Crust of the Japanese Islands Induced by the 2011 Tohoku‐Oki Megathrust Earthquake

Abstract We investigated VP/VS changes in the upper crust of the Japanese islands after the 2011 MW9.0 Tohoku‐Oki megathrust earthquake. Abrupt VP/VS changes with azimuth‐dependent variations were observed after the megathrust earthquake. The VP/VS changes ranged between −0.0458 (±0.0012) and 0.0422...

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Bibliographic Details
Main Authors: Ilgoo Kim, Tae‐Kyung Hong
Format: Article
Language:English
Published: Wiley 2018-12-01
Series:Geophysical Research Letters
Subjects:
azimuthal seismic anisotropy
medium perturbation
megathrust earthquake
Japanese islands
upper crust
temporal change
Online Access:https://doi.org/10.1029/2018GL080742
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https://doi.org/10.1029/2018GL080742

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