Retraction to: Earth, Planets and Space (2017) 69:72 https://doi.org/10.1186/s40623-017-0657-8
The Editor-in-Chief is retracting this article (Hata et al. 2017) because an Investigation Committee established by Osaka University has found that data were fabricated by manipulation, and that theoretical calculation values were falsified to make the fabricated data look more convincing. Masayuki Yoshimi, Hiroyuki Goto, Takashi Hosoya, Hitoshi Morikawa and Takao Kagawa agree with this retraction. Yoshiya Hata is deceased.
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Hata Y, Yoshimi M, Goto H, Hosoya T, Morikawa H, Kagawa T (2017) Recovery process of shear wave velocities of volcanic soil in central Mashiki Town after the 2016 Kumamoto earthquake revealed by intermittent measurements of microtremor. Earth Planets Space 69:72. https://doi.org/10.1186/s40623-017-0657-8
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Hata, Y., Yoshimi, M., Goto, H. et al. Retraction Note to: Recovery process of shear wave velocities of volcanic soil in central Mashiki Town after the 2016 Kumamoto earthquake revealed by intermittent measurements of microtremor. Earth Planets Space 71, 61 (2019). https://doi.org/10.1186/s40623-019-1040-8
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DOI: https://doi.org/10.1186/s40623-019-1040-8