Fig. 2.
From: Spatio-temporal occurrence patterns among the foreshocks preceding the 2007 Noto Hanto earthquake
Unprocessed seismograms for the updown (left panel) and east-west (right panel) components of the E1 through E9 reference events. Seismograms are normalized by their maximum amplitude. The P- and S-phase onsets are shown by a dashed line and inverted triangles, respectively.