Mulgor Logo EQ at Christchurch at 23:44:55 on 25-Sep-2021

Vertical Velocities recorded at Port Levy

EQ Details

Magnitude: 3.2
Depth: 6 km
Distance: 3 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 254.69 0.157 100.0
T < 1 s 238.82 0.157 99.6
T > 1 s 12.38 4.5 0.4

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.