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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