Table 1 Parameters of the Three Inversion Cases

Segments

S1, S2

S1, S3

S1, S2, S3

Seismic moment

6.6 × 10¹⁹ Nm (M_W 7.1)

5.9 × 10¹⁹ Nm (M_W 7.1)

6.8 × 10¹⁹ Nm (M_W 7.2)

Average slip

All segments

1.1 m

0.96 m

0.75 m

Segment S1 and/or S2 (eastward shallow-dipping)

1.1 m

1.1 m

0.80 m

Segment S3 (westward steep-dipping)

–

0.84 m

0.65 m

Rupture velocity

2.9 km/s

2.9 km/s

2.9 km/s

Variance reduction

0.65

0.65

0.73