Table 2 Summary of methods applied in the blind prediction of step-2
Team | Prediction | Methods | Nonlinearity | Subsurface structure | Reliable frequency range (Hz) |
|---|---|---|---|---|---|
1 | 1 | 2D-FDM | Yes | 1D (Preferred model) + 2D (JIVSM) | 0.1–10 |
2 | 2D-FDM | Yes | 1D (Preferred model) + 2D (JIVSM) | 0.1–10 | |
2 | 3 | Equivalent–linear (1D) | Yes | 1D (Own model in BP1) | 0.1–20 |
3 | 4 | 1D | No | 1D (Own model in BP1) | 0.1–25 |
4 | 5 | Hybrid (1D + 3D-FDM) | No | 1D (Own model in BP1) + 3D (JIVSM) | 0.1–20 |
5 | 6 | Stochastic Green's Function | No | 1D (Own estimated model) | 0.5–10 |
6 | 7 | Stochastic Green's Function | No | ー | 0.2–10 |
7 | 8 | Stochastic approach | No | 1D (Own model in BP1) | 0.25–25 |
8 | 9 | Empirical Green's Function | No | ー | 0.1–10 |
9 | 10 | Generalized Standard Spectral ratio | No | ー | 0.5–20 |
11 | Standard Spectral ratio | No | ー | 0.5–30 | |
10 | 12 | Semi-empirical approach | No | ー | 0.2–10 |
11 | 13 | Deffuse Field concept | No | 1D (Own estimated model) | 0.1–20 |
12 | 14 | Site effect substitution | No | ー | 0.1–10 |
13 | 15 | Physics-based simulation | No | 1D (Own estimated model) | 0.01–50 |
14 | 16 | 1D | No | 1D (Preferred model) | 0.1–10 |
15 | 17 | Empirical Green's Function | No | ー | 0.1–20 |
18 | Spectral ratio | No | ー | 0.1–20 |