Magnitude 2.6 Earthquake of Larsen Bay, Alaska 2014-09-04

2014-09-04 16:46:25 UTC  : Larsen Bay, Alaska EARTHQUAKE

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Magnitude : 2.6

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2014-09-04 16:46:25 UTC

1. 2014-09-04 08:46:25 UTC-08:00 at epicenter

Earthquake data:

Location : Position of Epicenter 

1. 57.842°N 153.995°W

Depth : Depth of starting Rupture 

7.2km (4.5mi)

Region : Larsen Bay, Alaska

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

 a)  33km (21mi) N of Larsen Bay, Alaska

 b)    441km (274mi) SSW of Anchorage, Alaska

 c)  477km (296mi) SSW of Knik-Fairview, Alaska

1. 
   

 d)  847km (526mi) SSW of Fairbanks, Alaska

1.  e)  1121km (697mi) W of Whitehorse, Canada

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	2.6 ml	--
Location	57.842°N, 153.995°W	± 0.5 km
Depth	7.2 km	± 0.6 km
Number of Phase Applied1	18
Minimum Distance2	--
Travel Time Residual3	0.58 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)