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Earth, Planets and Space
Fig. 7 | Earth, Planets and Space

Fig. 7

From: Difference of horizontal-to-vertical spectral ratios of observed earthquakes and microtremors and its application to S-wave velocity inversion based on the diffuse field concept

Fig. 7

A parametric study of the effect of the bottommost layer on the theoretical EHVR for the best-fit model at MYG006 with 14 layers (Nagashima et al. 2014, 2017). When we omit the two layers in one step from the original velocity model shown in the right, not only the amplitude of the lowest frequency peak but also the amplitudes of peaks and troughs in the higher frequency range are strongly affected

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