Magnitude 5.3 Earthquake of Oyama, Japan 2014-08-20

2014-08-20 19:38:24 UTC :Oyama, Japan EARTHQUAKE

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Magnitude: 5.3

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2014-08-20 19:38:24 UTC
2. 
   

1. 2014-08-21 04:38:24 UTC+09:00 at epicenter

Earthquake data:

Location : Position of Epicenter 

33.212°N 138.109°E

Depth : Depth of starting Rupture 

306.5km (190.4mi)

Region : Oyama, Japan

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

a) 154km (96mi) S of Oyama, Japan

b) 163km (101mi) S of Sagara, Japan

c) 166km (103mi) S of Iwata, Japan

d) 168km (104mi) SSE of Hamamatsu, Japan

e) 310km (193mi) SSW of Tokyo, Japan

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	5.3 mb	± 0.03
Location	33.212°N, 138.109°E	--
Depth	306.5 km	± 5.1 km
Number of Phase Applied1	180
Minimum Distance2	159.5 km (1.43°)
Travel Time Residual3	0.73 sec
Azimuthal Gap4	20°

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)