Magnitude 4.2 Earthquake of Talkeetna, Alaska 2014-09-10

2014-09-09-10 16:01:48 UTC  :Talkeetna, Alaska EARTHQUAKE

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Magnitude : 4.2

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2014-09-10 16:01:48 UTC

1. 2014-09-10 08:01:48 UTC-08:00 at epicenter

Earthquake data:

Location : Position of Epicenter 

1. 62.590°N 152.080°W

Depth : Depth of starting Rupture 

5.0km (3.1mi)

Region : Talkeetna, Alaska

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

a)  105km (65mi) WNW of Talkeetna, Alaska

b)    176km (109mi) NW of Knik-Fairview, Alaska

c)  191km (119mi) NW of Anchorage, Alaska

1. 
   

d)  329km (204mi) SW of College, Alaska

1. e)  923km (574mi) WNW of Whitehorse, Canada

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	4.2 ml	--
Location	62.590°N, 152.080°W	± 0.2 km
Depth	5.0 km	± 0.2 km
Number of Phase Applied1	69
Minimum Distance2	--
Travel Time Residual3	0.78 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)