Mulgor Logo EQ at Gisborne at 08:55:19 on 15-Sep-2021

Vertical Velocities recorded at Port Levy

EQ Details

Magnitude: 3.9
Depth: 25 km
Distance: 684 km
Estimated travel time of P waves: 89 s
Estimated travel time of S waves: 159 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 0.92 0.802 100.0
T < 1 s 0.63 0.381 35.3
T > 1 s 0.84 2.2 64.6

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.