Mulgor Logo EQ at Reefton at 17:32:40 on 22-Dec-2020

Vertical Velocities recorded at Port Levy

EQ Details

Magnitude: 4.2
Depth: 5 km
Distance: 183 km
Estimated travel time of P waves: 30 s
Estimated travel time of S waves: 52 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 8.96 0.262 100.0
T < 1 s 8.88 0.258 99.1
T > 1 s 0.89 2.7 0.9

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.