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Fig. 12 | Earth, Planets and Space

Fig. 12

From: Peak ground motions and characteristics of nonlinear site response during the 2018 Mw 6.6 Hokkaido eastern Iburi earthquake

Fig. 12

Plots of H-to-V spectral ratios of surface recordings during weak-motions (gray lines) and those during the mainshock (red lines) at KiK-net sites. The green and blue lines denote the S-to-B spectral ratios of horizontal components (H-to-H) for mainshock and weak-motions, respectively (see also Fig. 5). The plots are arranged in order of the sites depicted in Figs. 5 and 7. Solid black lines denote mean spectral ratios for weak-motions and dashed gray lines denote one standard deviation. The horizontal vector PGA in units of cm/s2, horizontal vector PGV in units of cm/s, Vs30 in units of m/s, DNL values, and fault-to-site distance (R) in units of km are also included for each site. See Fig. 3 for site location

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