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Table 4 SMGA parameters in this study and comparison with Somei et al. (2019), and Recipe. For location of SMGAs and hypocenters, see Fig. 8

From: Characterized source model of the M7.3 2016 Kumamoto earthquake by the 3D reciprocity GFs inversion with special reference to the velocity pulse at KMMH16

 

This study

EGF (Somei et al. 2019)

Recipe** (Irikura and Miyake 2011)

Inversion model

Tuned model****

SMGA1

Mo, Nm

6.42e18

3.16e18

2.08e18

3.22e18

Slip, m

3.97

2.08

1.25

2.2

Vr, km/s

2.52

2.8

2.4

t0, s/Vrb, km/s

1.59/2.51

1.53/2.6

0.71/2.81

1.66/2.4

Tp, s

0.15

–

0.17***

Tr, s*

1.43

0.6

1.5

Strike, dip, rake

205, 72, − 196

279, 67, − 22

-

SMGA2

Mo, Nm

2.26e18

2.08e18

3.22e18

Slip, m

1.40

1.25

2.2

Vr, km/s

2.53

2.8

2.4

t0, s/Vrb, km/s

6.60/1.70

2.26/2.80

4.68/2.4

Tp, s

0.10

–

0.17***

Tr, s*

1.42

0.6

1.5

Strike, dip, rake

226, 77, − 133

279, 67, -22

–

SMGA3

Mo, Nm

5.74e18

5.49e18

8.64e18

Slip, m

2.00

1.72

3.2

Vr, km/s

2.50

2.8

2.4

t0, s/Vrb, km/s

5.89/2.42

3.50/3.79

5.94/2.4

Tp, s

0.35

–

0.17***

Tr, s*

2.00

0.6

2.08

Strike, dip, rake

236, 65, − 174

230, 38, − 112

–

  1.  *Rise time in this study is calculated as a half of travel time across SMGA. **Assumed fault length is 38 km (i.e., without segment F1). ***Calculated as Tp = 1/fmax, where fmax = 6 Hz (recommended by Recipe). ****Parameters not menshioned for Tuned model are the same as for Inversion model