Table 2 Mainshock occurrence rate for different magnitudes of mainshocks as a function of foreshock magnitude
From: Characteristics of the foreshock occurrence for Mj3.0 to 7.2 shallow onshore earthquakes in Japan
Mainshock magnitude | ||||||
|---|---|---|---|---|---|---|
3.0–3.4 | 3.5–3.9 | 4.0–4.4 | 4.5–4.9 | 5.0–5.4 | > = 5.5 | |
Foreshock magnitude | ||||||
1.0–1.4 | 11.35% | 9.44% | 8.04% | 7.79% | 5.88% | 4.17% |
1.5–1.9 | 9.51% | 6.07% | 8.04% | 2.60% | 5.88% | 4.17% |
2.0–2.4 | 6.60% | 6.74% | 6.53% | 5.19% | 5.88% | 12.5% |
2.5–2.9 | 7.67% | 7.19% | 7.04% | 3.90% | 5.88% | 0 |
3.0–3.4 | – | 5.39% | 6.03% | 3.90% | 5.88% | 0 |
3.5–3.9 | – | – | 3.02% | 5.19% | 5.88% | 4.17% |