EQ at Christchurch at 19:31:09 on 20-Apr-2023
Vertical Velocities recorded at Port Levy
EQ Details
Magnitude: 3.6
Depth: 10 km
Distance: 21 km
Estimated travel time of P waves: 4 s
Estimated travel time of S waves: 7 s
Travel times of P and S waves were derived from this website
| Sig. Height μm/s | Sig. Period s | % of Variance | |
|---|---|---|---|
| Raw | 188.91 | 0.237 | 100.0 |
| T < 1 s | 188.26 | 0.232 | 99.9 |
| T > 1 s | 4.64 | 1.6 | 0.1 |
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.