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 |