EQ at Christchurch at 09:10:28 on 15-Jul-2018
Vertical Velocities recorded at Port Levy
EQ Details
Magnitude: 4.0
Depth: 9 km
Distance: 20 km
Estimated travel time of P waves: 4 s
Estimated travel time of S waves: 6 s
Travel times of P and S waves were derived from this website
| Sig. Height μm/s | Sig. Period s | % of Variance | |
|---|---|---|---|
| Raw | 302.75 | 0.282 | 100.0 |
| T < 1 s | 310.17 | 0.284 | 99.9 |
| T > 1 s | 11.46 | 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.