Fig. 2: Seismic kinematic source models and P-, T-axes for the first event (26th Dec. 2006, UTC 12:26) and the second event (26th Dec. 2006, UTC 12:34) in the 2006 Pingtung offshore earthquake doublet.

A Map view showing modeled spaces and focal mechanisms, with color and size scaled by potency-density. Black lines indicate surface traces of model planes for the first event and second event. B, C The panels include: (1) Map view showing the summed slip solution and focal mechanisms; (2) Moment rate functions for each event; (3) Slip distribution (potency density, in meters; see Methods section) on vertical model planes, with stars marking the initial rupture points. Focal mechanisms are shown in map view, and their projections onto the respective vertical planes are presented in cross-section view in Fig. S4. Depths are shown as absolute values (km); (4) Station distribution on the global map (triangles), with selected waveform fits shown for stations marked in red. Observed waveforms are plotted in black and synthesized waveforms in red. D Equal-angle stereonets illustrating P- and T-axes orientations, grouped in 10-km depth intervals, reveal depth-dependent variations in their orientations. For a comprehensive depth analysis, refer to Supplementary Fig. S14.