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

Fig. 10

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. 10

Averaged EMR (red), the average ± one standard deviation (orange), and individual EMRs (black) where the horizontal axis at all the sites are normalized with respect to their fundamental peak frequencies of MHVRs. The lower panel shows the numbers of data used for averaging at each normalized frequency (with respect to the peak frequency) with the equal increment of 0.05. Since many frequency points will be provided from the sites with high fundamental peak frequencies, numbers below 1 are much larger

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