Mulgor Logo EQ at Christchurch at 20:43:22 on 21-Jul-2019

Vertical Velocities recorded at Port Levy

EQ Details

Magnitude: 3.5
Depth: 6 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

Statistics of Signal at Port Levy
Sig. Height μm/s Sig. Period s % of Variance
Raw 147.01 0.273 100.0
T < 1 s 147.38 0.278 99.8
T > 1 s 8.65 1.8 0.2

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.