EQ at Christchurch at 09:20:23 on 21-Feb-2021
Vertical Velocities recorded at Port Levy
EQ Details
Magnitude: 2.3
Depth: 1 km
Distance: 25 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 | 4.22 | 0.214 | 100.0 |
| T < 1 s | 3.87 | 0.182 | 85.6 |
| T > 1 s | 1.65 | 3.3 | 14.4 |
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.