Table 2 Input parameters for the stochastic finite-fault model of the Jiuzhaigou earthquake
From: Stochastic finite-fault simulation of the 2017 Jiuzhaigou earthquake in China
Parameters | Model | Reference |
|---|---|---|
Moment magnitude (Mw) | 6.5 | CENC |
Hypocenter location | 103.82°E, 33.20°N | CENC |
Strike and dip angle | 156°, 79° | Yi et al. (2017) |
fault length and width (km) | Model 1: 32 × 30 (1.52 × 2) Model 2: 23 × 15 (1 × 1) | Zhang et al. (2017) Leonard (2010) |
Slip distribution | Model 1: estimated by Zhang et al. (2017) Model 2: random distribution | Zhang et al. (2017) |
Stress drop (bars) | 38.5 | This study |
Shear-wave velocity (km/s) | 3.6 | Ghasemi et al. (2010) |
Density (g/cm3) | 2.7 | Ghasemi et al. (2010) |
Rupture velocity | 0.8 × (Shear-wave velocity) | Ghasemi et al. (2010) |
Pulsing area percentage | 50% | Ghasemi et al. (2010) |
Geometric spreading | 1/R for R ≤ 75 km, 1/R0.5 for 75 km ≤ R | Ghasemi et al. (2010) |
Distance-dependent duration | 0 for R ≤ 10 km, 0.16R for 10 < R ≤ 70 km, − 0.03R for 70 < R ≤ 130 km, − 0.04R for 130 km < R | Atkinson and Boore (1995) |
Quality factor | 84.9f0.71 | Wang et al. (2017) |
Site amplification | Quarter-wavelength approximation of amplification | Yu and Li (2012) |
Kappa (s) | 0.0206 | This study |