EQ at Christchurch at 21:30:29 on 01-Aug-2021
Vertical Velocities recorded at Port Levy
EQ Details
Magnitude: 1.9
Depth: 9 km
Distance: 16 km
Estimated travel time of P waves: 3 s
Estimated travel time of S waves: 5 s
Travel times of P and S waves were derived from this website
| Sig. Height μm/s | Sig. Period s | % of Variance | |
|---|---|---|---|
| Raw | 2.68 | 0.145 | 100.0 |
| T < 1 s | 2.37 | 0.132 | 86.9 |
| T > 1 s | 0.76 | 2.0 | 13.3 |
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.