Magnitude 3.1 Earthquake of Old Iliamna, Alaska 2014-08-07

2014-08-07 07:25:14 UTC  : Old Iliamna, Alaska EARTHQUAKE

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Magnitude: 3.1

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2014-08-07 07:25:14 UTC

1. 2014-08-06 23:25:14 UTC-08:00 at epicenter

Earthquake data:

Location : Position of Epicenter 

1. 59.618°N 153.417°W

Depth : Depth of starting Rupture 

100.0km (62.1mi)

Region : Old Iliamna, Alaska

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

 a)   85km (53mi) E of Old Iliamna, Alaska

 b)    263km (163mi) SW of Anchorage, Alaska

 c)  297km (185mi) SW of Knik-Fairview, Alaska

 d)   652km (405mi) SSW of Fairbanks, Alaska

1.  e)  1023km (636mi) W of Whitehorse, Canada

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	3.1 ml	--
Location	59.618°N, 153.417°W	± 0.6 km
Depth	100.0 km	± 0.4 km
Number of Phase Applied1	71
Minimum Distance2	--
Travel Time Residual3	0.99 sec
Azimuthal Gap4	--

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)