EQ at Greymouth at 05:18:07 on 11-Jan-2023
Vertical Velocities recorded at Port Levy
EQ Details
Magnitude: 3.4
Depth: 5 km
Distance: 198 km
Estimated travel time of P waves: 31 s
Estimated travel time of S waves: 55 s
Travel times of P and S waves were derived from this website
| Sig. Height μm/s | Sig. Period s | % of Variance | |
|---|---|---|---|
| Raw | 1.75 | 0.357 | 100.0 |
| T < 1 s | 1.55 | 0.249 | 63.4 |
| T > 1 s | 1.13 | 3.6 | 36.7 |
Significant height and period are derived from a zero-crossing analysis of the wave signal after the arrival time of the p waves.
They are the averages of the highest third of the waves.