Magnitude 4.9 Earthquake of Wrigley, Canada 2013 July 12

2013-07-12 19:59:48 UTC : Wrigley, Canada EARTHQUAKE

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Magnitude: 4.9

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2013-07-12 19:59:48 UTC

1. 2013-07-12 13:59:48 UTC-06:00 at epicenter

Earthquake data:

Location : Position of Epicenter 

62.075°N 124.230°W

Depth : Depth of starting Rupture 

3.6km (2.3mi)

Region : Wrigley, Canada

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

a) 136km (85mi) SSW of Wrigley, Canada

b) 514km (319mi) W of Yellowknife, Canada

c) 597km (371mi) ENE of Whitehorse, Canada

d) 676km (420mi) NNW of Fort St. John, Canada

e) 703km (437mi) NE of Juneau, Alaska

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	4.9 mb	± 0.04
Location	62.075°N, 124.230°W	± 13.9 km
Depth	3.7 km	± 6.2 km
Number of Phase Applied1	211
Minimum Distance2	503.2 km (4.52°)
Travel Time Residual3	1.17 sec
Azimuthal Gap4	31°

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)