EQ at Christchurch at 21:46:59 on 20-Jul-2021
Vertical Velocities recorded at Port Levy
EQ Details
Magnitude: 2.1
Depth: 5 km
Distance: 27 km
Estimated travel time of P waves: 5 s
Estimated travel time of S waves: 8 s
Travel times of P and S waves were derived from this website
| Sig. Height μm/s | Sig. Period s | % of Variance | |
|---|---|---|---|
| Raw | 2.43 | 0.136 | 100.0 |
| T < 1 s | 2.23 | 0.128 | 88.2 |
| T > 1 s | 0.74 | 2.5 | 11.8 |
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.