Mulgor Logo EQ at Milford Sound at 08:16:06 on 21-Sep-2021

Vertical Velocities recorded at Port Levy

EQ Details

Magnitude: 4.6
Depth: 78 km
Distance: 453 km
Estimated travel time of P waves: 60 s
Estimated travel time of S waves: 107 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 3.86 0.357 100.0
T < 1 s 3.73 0.318 88.2
T > 1 s 1.28 1.8 11.9

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.