Magnitude 4.4 Earthquake of Ofunato, Japan 2014-08-09

2014-08-09 05:49:39 UTC :Ofunato, Japan EARTHQUAKE

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Magnitude: 4.4

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2014-08-09 05:49:39 UTC
2. 
   

1. 2014-08-09 14:49:39 UTC+09:00 at epicenter

Earthquake data:

Location : Position of Epicenter 

38.852°N 141.962°E

Depth : Depth of starting Rupture 

79.2km (49.2mi)

Region : Ofunato, Japan

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

a) 32km (20mi) SE of Ofunato, Japan

b) 46km (29mi) S of Kamaishi, Japan

c) 57km (35mi) S of Otsuchi, Japan

d) 63km (39mi) SE of Tono, Japan

e) 404km (251mi) NNE of Tokyo, Japan

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	4.4 mb	± 0.18
Location	38.852°N, 141.962°E	--
Depth	79.2 km	± 10.4 km
Number of Phase Applied1	25
Minimum Distance2	366.0 km (3.29°)
Travel Time Residual3	0.48 sec
Azimuthal Gap	155°

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)