Magnitude 5.3 Earthquake of Ofunato, Japan 2013 October 31

2013-10-31 15:01:02 UTC: Ofunato, Japan EARTHQUAKE

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Magnitude: 5.3

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2013-10-31 15:01:02 UTC

1. 2013-11-01 01:01:02 UTC+10:00 at epicenter
2. 
   

Earthquake data:

Location : Position of Epicenter 

38.286°N 142.830°E

Depth : Depth of starting Rupture 

1.0km (0.6mi)

Region : Ofunato, Japan

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

a) 130km (81mi) SE of Ofunato, Japan

b) 134km (83mi) E of Ishinomaki, Japan

c) 136km (85mi) SE of Kamaishi, Japan

d) 142km (88mi) E of Yamoto, Japan

e) 401km (249mi) NE of Tokyo, Japan

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	5.3 mb	± 0.03
Location	38.286°N, 142.830°E	--
Depth	1.0 km	± 1.3 km
Number of Phase Applied1	162
Minimum Distance2	415.6 km (3.73°)
Travel Time Residual3	1.13 sec
Azimuthal Gap4	68°

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)