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Earth, Planets and Space

Table 1 Finite-fault models computed by the REGARD system during the 2016 Kumamoto earthquake (M j 7.3)

From: First result from the GEONET real-time analysis system (REGARD): the case of the 2016 Kumamoto earthquakes

Model

Time

Elapsed time

Lat. (°)

Lon. (°)

Depth (km)

Length (km)

Width (km)

Strike (°)

Dip (°)

Rake (°)

Slip (m)

M w

VR (%)

REGARD1

01:26:03

00:58

32.794

130.924

0.00

11.67

6.76

295.87

81.88

352.79

9.89

6.85

80.8

REGARD2

01:26:45

01:40

32.800

130.926

1.49

11.20

2.37

295.28

76.05

351.16

28.81

6.84

81.8

REGARD3

01:27:01

01:56

32.803

130.932

1.44

11.51

1.41

294.17

73.72

349.31

43.28

6.81

83.7

REGARD4

01:29:55

04:50

32.889

131.003

0.00

25.33

9.55

227.91

55.96

196.87

4.72

6.96

96.2

REGARD final

01:30:48

05:43

32.896

131.004

0.00

25.50

10.35

228.50

54.47

196.70

4.41

6.96

96.2

Yarai et al. (2016)

 

–

32.879

130.992

0.5

19.7

12.3

235

63.9

209.0

3.9

6.90

–

32.880

130.979

2.0

4.9

6.4

52.7

65.9

190.1

3.6

6.28

 

32.786

130.811

2.0

11.0

19.9

205

69.4

178.0

2.4

6.73

 
  1. The finite-fault model consists of three rectangular fault planes (Yarai et al. 2016) is also listed for comparison. The elapsed time from the event origin time (01:25:05 on April 16, 2016 JST) is also shown. The position denotes the upper left corner of the fault plane. A variance reduction (VR) is estimated with the residual sum of squares of three-dimensional displacements normalized by standard deviations
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