Fig. 5From: Application of the on-site P-wave earthquake early warning method based on site-specific ratios of S-waves to P-waves to the 2016 Kumamoto earthquake sequence, JapanEstimated site-specific average spectral ratios of S-waves to P-waves using a time-window of 2.56 s at the strong-motion stations with the standard deviations. a Strong-motion stations of K-NET, KiK-net, and JR Kyushu. b Temporary seismic stationsBack to article page