Fig. 3

Remote seismicity triggering in Noto Peninsula, Tohoku region and Hokkaido, respectively. a Low-frequency (0.01–0.2 Hz) velocity seismograms observed at the Hi-net AMZH station (up to down: vertical, radial and transverse components), in Noto Peninsula, and high-frequency (10–30 Hz), vertical velocity seismogram at TGIH station (Hi-net). The plot at the bottom shows the P- and S-wave arrivals of the remotely triggered earthquake at the station TGIH (EW and UD components); b Same as in (a), but for Tohoku region. The low-frequency and high-frequency recording stations are NSSH (Hi-net) and AKHC (JMA), respectively. c Same as in (a), but for Hokkaido region. The low-frequency and high-frequency recording stations are ANNH (Hi-net) and MEAK (JMA), respectively. The bottom plot in b and c shows P- and S-wave arrivals on NS and UD components. The reference time in a, b and c is the same as for Fig. 2. The epicentral distances, in km, are also indicated. The names of the stations are written by omitting the “N.” and “V.” part, for the Hi-net and JMA (volcanic) networks, respectively. The vertical dotted lines indicate the window of larger amplitude surface waves