Mulgor Logo EQ at Christchurch at 21:30:29 on 01-Aug-2021

Vertical Velocities recorded at Port Levy

EQ Details

Magnitude: 1.9
Depth: 9 km
Distance: 16 km
Estimated travel time of P waves: 3 s
Estimated travel time of S waves: 5 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 2.68 0.145 100.0
T < 1 s 2.37 0.132 86.9
T > 1 s 0.76 2.0 13.3

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.