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Earth, Planets and Space
Fig. 5 | Earth, Planets and Space

Fig. 5

From: Assessment of nonlinear site response at ocean bottom seismograph sites based on S-wave horizontal-to-vertical spectral ratios: a study at the Sagami Bay area K-NET sites in Japan

Fig. 5

a Comparison of peak frequencies between weak-motion (PGA < 20 cm/s2) and strong-motion (PGAs > 100 cm/s2) S-H/V spectral ratios. b Comparison of weak-motion peak spectral ratios with strong-motion (PGAs > 100 cm/s2) spectral ratios at the peak frequencies of weak motions. c Example plot depicting the peak frequencies compared in (a) and the spectral ratios compared in (b)

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