EQ at Tonga at 22:28:00 on 25-Apr-2021
Vertical Velocities recorded at Port Levy
EQ Details
Magnitude: 6.4
Depth: 234 km
Distance: 2620 km
Estimated travel time of P waves: 289 s
Estimated travel time of S waves: 526 s
Travel times of P and S waves were derived from this website
| Sig. Height μm/s | Sig. Period s | % of Variance | |
|---|---|---|---|
| Raw | 4.32 | 0.854 | 100.0 |
| T < 1 s | 3.24 | 0.576 | 71.1 |
| T > 1 s | 2.51 | 2.0 | 28.9 |
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.