Table 3 The mean EPA values for different magnitudes and epicentral distances.
From: Strong ground motion prediction model for EPA in Loess Plateau of Northwestern China
Site classification | Direction | Magnitude | Epicentral distance/km | |||
|---|---|---|---|---|---|---|
0 ≤ Repi < 30 | 30 ≤ Repi < 50 | 50 ≤ Repi < 100 | Repi ≥ 100 | |||
The mean EPA value/gal | ||||||
II | EW | 3 ≤ Ms < 4 | 10.69 | 3.72 | 3.60 | 2.42 |
4 ≤ Ms < 5 | 34.04 | 15.07 | 7.19 | 2.56 | ||
5 ≤ Ms < 6 | 47.68 | 14.69 | 5.91 | 3.57 | ||
Ms ≥ 6 | 57.24 | 22.72 | 13.38 | 4.47 | ||
NS | 3 ≤ Ms < 4 | 11.51 | 4.56 | 2.83 | 2.50 | |
4 ≤ Ms < 5 | 38.41 | 15.54 | 5.59 | 2.58 | ||
5 ≤ Ms < 6 | 49.64 | 12.17 | 6.43 | 3.43 | ||
Ms ≥ 6 | 53.40 | 16.76 | 13.42 | 4.70 | ||
UD | 3 ≤ Ms < 4 | 5.75 | 1.43 | 1.16 | 0.98 | |
4 ≤ Ms < 5 | 15.05 | 4.89 | 3.04 | 1.42 | ||
5 ≤ Ms < 6 | 49.17 | 5.61 | 3.11 | 1.53 | ||
Ms ≥ 6 | 68.19 | 15.75 | 15.15 | 2.16 | ||
