Fig. 3
From: Which is heterogeneous, stress or strength? An estimation from high-density seismic observations
Examples of waveforms in the vertical component recorded by the high-frequency observation network. Waveforms are displayed in order of epicentral distances. Red and green bars indicate visually picked arrival times of P- and S-waves, respectively. Brown bars indicate locations of maximum amplitude. The arrival times of S-waves were picked on transverse components, not shown in this figure