Magnitude 4.2 Earthquake of Severo-Kuril'sk, Russia 2014-08-20

2014-08-20 00:11:38 UTC :Severo-Kuril'sk, Russia EARTHQUAKE

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Magnitude: 4.2

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2014-08-20 00:11:38 UTC

1. 
   

1. 2014-08-20 12:11:38 UTC+12:00 at epicenter

Earthquake data:

Location : Position of Epicenter 

49.566°N 154.898°E

Depth : Depth of starting Rupture 

102.7km (63.8mi)

Region : Severo-Kuril'sk, Russia

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

a) 151km (94mi) SW of Severo-Kuril'sk, Russia

b) 447km (278mi) SW of Vilyuchinsk, Russia

c) 467km (290mi) SW of Petropavlovsk-Kamchatskiy, Russia

d) 470km (292mi) SSW of Yelizovo, Russia

e) 1975km (1227mi) NE of Tokyo, Japan

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	4.2 mb	± 0.20
Location	49.566°N, 154.898°E	--
Depth	102.7 km	± 8.6 km
Number of Phase Applied1	24
Minimum Distance2	440.6 km (3.96°)
Travel Time Residual3	0.59 sec
Azimuthal Gap4	167°

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)