EQ at Christchurch at 23:08:48 on 13-Jul-2021
Vertical Velocities recorded at Port Levy
EQ Details
Magnitude: 1.9
Depth: 4 km
Distance: 15 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 | 3.30 | 0.180 | 100.0 |
| T < 1 s | 2.92 | 0.171 | 94.0 |
| T > 1 s | 0.63 | 1.9 | 6.0 |
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.