Magnitude 4.3 Earthquake of Atka, Alaska 2014-08-31

2014-08-31 23:36:42 UTC  : Atka, Alaska EARTHQUAKE

earthquake monitor,Alaska earthquake, earthquake realtime

Magnitude: 4.3

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2014-08-31 23:36:42 UTC

1. 2014-08-31 11:36:42 UTC-12:00 at epicenter

Earthquake data:

Location : Position of Epicenter 

1. 50.407°N 174.493°W

Depth : Depth of starting Rupture 

34.0km (21.1mi)

Region : Atka, Alaska

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

 a)  200km (124mi) S of Atka, Alaska

 b)   1664km (1034mi) SSE of Anadyr', Russia

 c)  1867km (1160mi) E of Petropavlovsk-Kamchatskiy, Russia

1. 
   

 d)  1884km (1171mi) E of Yelizovo, Russia

1.  e)  2687km (1670mi) W of Whitehorse, Canada

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	4.3 mb	± 0.06
Location	50.407°N, 174.493°W	--
Depth	34.0 km	± 8.2 km
Number of Phase Applied1	101
Minimum Distance2	201.0 km (1.81°)
Travel Time Residual3	0.64 sec
Azimuthal Gap4	197°

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)