Table 1 Summary of 14C age and VRM analysis of tsunami boulders.
Sample ID | 14C age (2σ) | Median 14C age | Contribution of PCA scores (%) | VRM direction | Unblocking temperature (°C) | \(\beta\) value(s) | Error(s) ( ±) | |||
|---|---|---|---|---|---|---|---|---|---|---|
|  |  |  | PC1 | PC2 | PC3 | Declination (°) | Inclination (°) |  |  |  |
TB2-1 | AD 629–1015 | AD 822 | 94.2 | 4.7 | 1.1 | 5.7 | 57.8 | 180 | 0.41 | 0.024 |
TB2-2 | AD 629–1015 | AD 822 | 86.0 | 9.0 | 5.0 | 73.9 | 68.6 | 165 | 0.55 | 0.045 |
TB4-1 | AD 1577–1953 | AD 1765 | 97.9 | 1.6 | 0.4 | 9.4 | 30.1 | 180 | 0.64 and 0.75 | 0.0028 and 0.0037 |
TB4-2 | AD 1577–1953 | AD 1765 | 95.4 | 4.2 | 0.3 | 16.4 | 21.0 | 155 | 0.70* |  |
TB4-3 | AD 1577–1953 | AD 1765 | 96.9 | 2.6 | 0.5 | -2.2 | 43.1 | 145 | 0.71 and 0.71 | 0.0041 and 0.0029 |
TB4-4 | AD 1577–1953 | AD 1765 | 90.7 | 7.3 | 2.0 | 10.7 | 35.3 | 155 | 0.68 | 0.0024 |
TB6-1 | AD 1597–1953 | AD 1775 | 83.7 | 14.6 | 1.8 | 2.5 | 47.9 | 170 | 0.63 | 0.0056 |
