Magnitude 4.4 Earthquake of Vostok, Russia 2014-08-09

2014-08-09 22:37:31 UTC :Vostok, Russia EARTHQUAKE

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Magnitude: 4.4

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2014-08-09 22:37:31 UTC
2. 
   

1. 2014-08-10 08:37:31 UTC+10:00 at epicenter

Earthquake data:

Location : Position of Epicenter 

47.702°N 146.965°E

Depth : Depth of starting Rupture 

422.2km (262.3mi)

Region : Vostok, Russia

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

a) 197km (122mi) SW of Vostok, Russia

b) 316km (196mi) E of Dolinsk, Russia

c) 330km (205mi) ENE of Yuzhno-Sakhalinsk, Russia

d) 330km (205mi) ESE of Poronaysk, Russia

e) 1463km (909mi) NNE of Tokyo, Japan

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	4.4 mb	± 0.05
Location	47.702°N, 146.965°E	--
Depth	422.2 km	± 8.2 km
Number of Phase Applied1	133
Minimum Distance2	328.9 km (2.96°)
Travel Time Residual3	0.59 sec
Azimuthal Gap4	116°

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)