Magnitude 4.8 Earthquake of Little Sitkin Island, Alaska 2014-08-12

2014-08-12 11:35:20 UTC  : Little Sitkin Island, Alaska EARTHQUAKE

earthquake monitor,Alaska earthquake, earthquake realtime

Magnitude: 4.8

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2014-08-12 11:35:20 UTC

1. 2014-08-12 02:35:20 UTC-09:00 at epicenter

Earthquake data:

Location : Position of Epicenter 

1. 51.806°N 178.640°E

Depth : Depth of starting Rupture 

100.7km (62.6mi)i)

Region : Little Sitkin Island, Alaska

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

 a)  18km (11mi) SSE of Little Sitkin Island, Alaska

 b)    1362km (846mi) E of Petropavlovsk-Kamchatskiy, Russia

 c)  1379km (857mi) E of Yelizovo, Russia

1. 
   

 d)  1379km (857mi) E of Vilyuchinsk, Russia

1.  e) 2963km (1841mi) W of Whitehorse, Canada

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	4.8 mb	± 0.04
Location	51.806°N, 178.640°E	--
Depth	100.7 km	± 9.2 km
Number of Phase Applied1	63
Minimum Distance2	66.1 km (0.59°)
Travel Time Residual3	1.33 sec
Azimuthal Gap4	148°

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)