Magnitude 4.5 Earthquake of Valdez, Alaska 2014-09-24

2014-09-24 07:30:56 UTC  : Valdez, Alaska EARTHQUAKE

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Magnitude : 4.5

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2014-09-24 07:30:56 UTC

1. 2014-09-23 23:30:56 UTC-08:00 at epicenter

Earthquake data:

Location : Position of Epicenter 

1. 61.366°N 146.796°W

Depth : Depth of starting Rupture 

14.2km (8.8mi)

Region : Valdez, Alaska

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

 a)  35km (22mi) NW of Valdez, Alaska

  b)   148km (92mi) E of Knik-Fairview, Alaska

 c)  165km (103mi) E of Anchorage, Alaska

1. 
   

 d)  386km (240mi) S of Badger, Alaska

1.  e)  639km (397mi) WNW of Whitehorse, Canada

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	4.5 ml	--
Location	61.366°N, 146.796°W	± 0.2 km
Depth	14.2 km	± 0.8 km
Number of Phase Applied1	143
Minimum Distance2	--
Travel Time Residual3	0.89 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)