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Table 2 Input parameters for the stochastic finite-fault model of the 2016 Kumamoto earthquake

From: Stochastic ground-motion simulations for the 2016 Kumamoto, Japan, earthquake

Parameters Value Reference
Source   
Moment magnitude (M w) 7.1 F-net
Hypocenter location 32.754°N, 130.763°E, 11 km F-net
Strike and dip angle (°) 224 and 65 F-net
Subfault length and width (km) 5 and 2.9 Hayes (2016)
Slip distribution Prescribed Hayes (2016)
Stress drop (bars) 64 This study
S-wave velocity (km/s) 3.6 (beneath the volcanic areas)
3.7 (beneath the non-volcanic areas)
Estimated from Zhao et al. (2011), Atkinson and Boore (2006)
Density (g/cm3) 2.8 Atkinson et al. (2009)
Rupture propagation velocity 0.8β Atkinson and Boore (2006)
Pulsing area percentage 50% Atkinson and Boore (2006)
Path   
Geometric spreading, R b: b= −1.0 (0–100 km)
−0.5 (>100 km)
Zengin and Cakti (2014)
Ground-motion duration, dR, d= 0.0 (0–10 km)
+0.16 (10–70 km)
−0.03 (70–130 km)
+0.04 (>130 km)
Atkinson and Boore (1995)
Quality factor Q s = (85.5 ± 1.5)f 0.68±0.01 (beneath the volcanic areas)
Q s = (120 ± 5)f 0.64±0.05 (beneath the non-volcanic areas)
This study
Site   
Site amplification See Additional files This study
κ (s) 0.0514 ± 0.0055 This study