Magnitude 5.4 Earthquake of Buldir Island, Alaska 2014-08-20

2014-08-20 20:12:37 UTC  : Buldir Island, Alaska EARTHQUAKE

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Magnitude: 5.4

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2014-08-20 20:12:37 UTC

1. 2014-08-21 08:12:37 UTC+12:00 at epicenter

Earthquake data:

Location : Position of Epicenter 

1. 52.521°N 175.397°E

Depth : Depth of starting Rupture 

4.3km (2.7mi)

Region : Buldir Island, Alaska

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

 a)  40km (25mi) WNW of Buldir Island, Alaska

 b)    1129km (702mi) E of Petropavlovsk-Kamchatskiy, Russia

 c)  1145km (711mi) E of Yelizovo, Russia

1. 
   

 d)  1146km (712mi) E of Vilyuchinsk, Russia

1.  e)  3092km (1921mi) W of Whitehorse, Canada

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	5.4 mb	± 0.03
Location	52.521°N, 175.397°E	± 2.3 km
Depth	4.3 km	± 3.4 km
Number of Phase Applied1	123
Minimum Distance2	90.8 km (0.82°)
Travel Time Residual3	0.83 sec
Azimuthal Gap4	29°

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)