Fig. 2.

Acceleration waveforms observed at stations of the Tsukuba-Fujisawa array. The waves are band-pass filtered between 0.05–0.5 Hz. The left and right panels show the NS and EW component, respectively. The abscissa represents the elapsed time from the origin time. The station names are indicated on the right of the traces. Manually picked P-wave arrivals and S-wave arrivals that are estimated from theoretical S-P time are indicated by black triangles.