EQ at Greymouth at 12:17:16 on 27-Sep-2019
Vertical Velocities recorded at Port Levy
EQ Details
Magnitude: 4.0
Depth: 10 km
Distance: 159 km
Estimated travel time of P waves: 27 s
Estimated travel time of S waves: 47 s
Travel times of P and S waves were derived from this website
| Sig. Height μm/s | Sig. Period s | % of Variance | |
|---|---|---|---|
| Raw | 5.97 | 0.273 | 100.0 |
| T < 1 s | 5.61 | 0.241 | 87.8 |
| T > 1 s | 2.15 | 1.7 | 12.1 |
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.