Fig. 5.

Snapshots of the rupture propagation at 10-s intervals derived from strong motion inversion. The area of the figures corresponds to the grids in Fig. 3. The seismic moment release during each interval is shown by colors. Contour interval is 0.5 × 10²⁰ N m. The star indicates the hypocenter. Diamonds corresponding to strong high-frequency radiation sources during the first, second, and third rupture stages (see Section 4) are shown in magenta, light blue, and blue, respectively.