Magnitude 6.2 Earthquake of Bella Bella, Canada 2015-04-24

2015-04-24 13:56:16 (UTC) :West-SouthWest of Bella Bella, Canada

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Magnitude : 6.2

Event Time: Time and Date Starting of Earthquake Rupture 

• 2015-04-24 13:56:16 (UTC)

Earthquake data:

Location : Position of Epicenter 

51.769°N 130.695°W

Depth : Depth of starting Rupture 

10.0 km

Region : Bella Bella, Canada

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

a) 182km (113mi) WSW of Bella Bella, Canada

b) 284km (176mi) S of Prince Rupert, Canada

c) 336km (209mi) SSW of Terrace, Canada

d) 430km (267mi) WNW of Campbell River, Canada

e) 641km (398mi) NW of Victoria, Canada

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	6.2 mww	--
Location	51.769°N 130.695°W	± 7.0 km
Depth	10.0 km	± 1.8
Number of Phase Applied1	109
Minimum Distance2	183.68 km (1.65°)
Travel Time Residual3	0.85 sec
Azimuthal Gap4	68°

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)