Magnitude 4.9 Earthquake of Amatignak Island, Alaska 2014-08-05

2014-08-05 13:06:19 UTC  : Amatignak Island, Alaska EARTHQUAKE

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Magnitude: 4.9

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2014-08-05 13:06:19 UTC

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1. 2014-08-05 04:06:19 UTC-09:00 at epicenter

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Earthquake data:

Location : Position of Epicenter 

1. 51.276°N 179.160°W

Depth : Depth of starting Rupture 

44.6km (27.7mi)

Region : Amatignak Island, Alaska

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

a) 3km (2mi) WNW of Amatignak Island, Alaska

b)    1513km (940mi) S of Anadyr', Russia

c)  1525km (948mi) E of Petropavlovsk-Kamchatskiy, Russia

d)   1541km (958mi) E of Vilyuchinsk, Russia

1. e) 2879km (1789mi) W of Whitehorse, Canada

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	4.9 mb	± 0.03
Location	51.276°N, 179.160°W	± 0.3 km
Depth	44.6 km	± 7.5 km
Number of Phase Applied1	76
Minimum Distance2	108.1 km (0.97°)
Travel Time Residual3	1.13 sec
Azimuthal Gap4	129°

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)