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Earth, Planets and Space
Fig. 10 | Earth, Planets and Space

Fig. 10

From: Use of Fourier phase characteristics and effective stress analyses for post-earthquake ground motion estimation: application to ESG6 blind prediction steps 2&3 dataset and JMA accelerometric data

Fig. 10

Similarity of the Fourier phase characteristics between the mainshock and the event No.161 at JMA. The observed velocity waveforms for the mainshock at JMA (black traces) and the phase-exchanged velocity waveforms in which the Fourier amplitude of the mainshock and the Fourier phase of the event No.161 are combined (red traces). Both traces are in the frequency range of 0.2–2 Hz. The phase-exchanged wave for the NS component was multiplied by (– 1)

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