Magnitude 4.5 Earthquake of Little Sitkin Island, Alaska 2014-09-02

2014-09-02 19:28:34 UTC  : Little Sitkin Island, Alaska EARTHQUAKE

earthquake monitor,Alaska earthquake, earthquake realtime

Magnitude: 4.5

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2014-09-02 19:28:34 UTC

1. 2014-09-02 10:28:34 UTC-09:00 at epicenter

Earthquake data:

Location : Position of Epicenter 

1. 51.694°N 178.550°E

Depth : Depth of starting Rupture 

98.4km (61.2mi)

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)    28km (17mi) S of Little Sitkin Island, Alaska

 b)     1359km (844mi) E of Petropavlovsk-Kamchatskiy, Russia

 c)   1376km (855mi) E of Yelizovo, Russia

 d)   1376km (855mi) E of Vilyuchinsk, Russia

1.  e)   2976km (1849mi) W of Whitehorse, Canada

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	4.5 mb	± 0.05
Location	51.694°N, 178.550°E	--
Depth	98.4 km	± 8.9 km
Number of Phase Applied1	152
Minimum Distance2	62.9 km (0.57°)
Travel Time Residual3	0.79 sec
Azimuthal Gap4	151°

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)