Mulgor Logo EQ at Christchurch at 18:09:32 on 04-Oct-2021

Vertical Velocities recorded at Port Levy

EQ Details

Magnitude: 3.3
Depth: 5 km
Distance: 5 km
Estimated travel time of P waves: 1 s
Estimated travel time of S waves: 2 s

Travel times of P and S waves were derived from this website

Statistics of Signal at Port Levy
Sig. Height μm/s Sig. Period s % of Variance
Raw 520.91 0.189 100.0
T < 1 s 510.27 0.180 100.0
T > 1 s 8.78 1.4 0.0

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.