Magnituae 4.8 Earthquake of Shikotan, Russia 2014-09-18

2014-09-18 05:56:38 UTC :Shikotan, Russia EARTHQUAKE

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Magnitude: 4.8

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2014-09-18 05:56:38 UTC
2. 
   

1. 2014-09-18 15:56:38 UTC+10:00 at epicenter

Earthquake data:

Location : Position of Epicenter 

43.853°N 146.311°E

Depth : Depth of starting Rupture 

77.5km (48.1mi)

Region : Shikotan, Russia

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

a) 33km (21mi) W of Shikotan, Russia

b) 83km (52mi) NE of Nemuro, Japan

c) 97km (60mi) ENE of Shibetsu, Japan

d) 164km (102mi) E of Abashiri, Japan

e) 1068km (664mi) NNE of Tokyo, Japan

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	4.8 mb	± 0.03
Location	43.854°N, 146.311°E	--
Depth	77.5 km	± 5.7 km
Number of Phase Applied1	374
Minimum Distance2	300.1 km (2.70°)
Travel Time Residual3	0.89 sec
Azimuthal Gap4	100°

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)