Magnitude 4.0 Earthquake of Port Hardy, Canada 2014-08-12

2014-08-12 07:00:28 UTC :Port Hardy, Canada EARTHQUAKE

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Magnitude: 4.0

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2014-08-12 07:00:28 UTC

1. 2014-08-11 22:00:28 UTC-09:00 at epicenter

Earthquake data:

Location : Position of Epicenter 

50.801°N 129.886°W

Depth : Depth of starting Rupture 

23.4km (14.6mi)

Region : Port Hardy, Canada

Directions and Distances :Directions and Distances from Geographical Reference in Close Proximity Which can be effected by Location Uncertainty

a)  174km (108mi) W of Port Hardy, Canada

b)  341km (212mi) WNW of Campbell River, Canada

c)  370km (230mi) WNW of Courtenay, Canada

d)  392km (244mi) S of Prince Rupert, Canada

e)  539km (335mi) WNW of Victoria, Canada

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	4.0 mb	± 0.06
Location	50.801°N, 129.886°W	--
Depth	23.4 km	± 7.8 km
Number of Phase Applied1	44
Minimum Distance2	197.5 km (1.77°)
Travel Time Residual3	1.02 sec
Azimuthal Gap4	180°

¹Number of phase Applied: 

In determining location of hypocenter, applied number of observations on P waves and S waves. The greater the more accurate prediction of EQ.

²Minimum Distance:

 Horizontal distance of nearest Station measured in Km from epicenter. The smaller the more accuracy in prediction of depth of EQ.

³Travel Time Residual:

 A way of measurement of fit of arrival time observed to arrival time predicted for particular location. The smaller the better fit of data.

⁴Azimuthal Gap: 

Expressed in degree; the smaller the smaller the error in horizontal positioning of EQ. Large uncertainty is considered when exceeds 180° (both depth and location)