Magnitude 4.9 Earthquake of Little Sitkin Island, Alaska 2014-07-05

2014-07-05 04:13:03 UTC : Little Sitkin Island, Alaska EARTHQUAKE

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Magnitude : 4.9

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2014-07-05 04:13:03 UTC
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1. 2014-07-04 19:13:03 UTC-09:00 at epicenter

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Earthquake data:

Location : Position of Epicenter 

51.758°N 178.679°E

Depth : Depth of starting Rupture 

101.7km (63.2mi)

Region : Little Sitkin Island, Alaska

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

a) 24km (15mi) SSE of Little Sitkin Island, Alaska

b) 1366km (849mi) E of Petropavlovsk-Kamchatskiy, Russia

c) 1383km (859mi) E of Yelizovo, Russia

d) 1383km (859mi) E of Vilyuchinsk, Russia

e) 2964km (1842mi) W of Whitehorse, Canada

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	4.9 mb	± 0.03
Location	51.758°N, 178.679°E	--
Depth	101.7 km	± 6.3 km
Number of Phase Applied1	159
Minimum Distance2	60.4 km (0.54°)
Travel Time Residual3	0.84 sec
Azimuthal Gap4	117°

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)