Magnitude 5.4 Earthquake of Naha-shi, Japan 2014-10-14

2014-10-14 22:52:11 UTC : Naha-shi, Japan EARTHQUAKE

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Magnitude : 5.4

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2014-10-14 22:52:11 UTC
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3. 2014-10-15 06:52:11 UTC+08:00 at epicenter
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1. Earthquake data:

Location : Position of Epicenter 

26.233°N 127.375°E

Depth : Depth of starting Rupture 

53.3km (33.1mi)

Region : Naha-shi, Japan

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

a)  30km (19mi) W of Naha-shi, Japan

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b)    30km (19mi) W of Tomigusuku, Japan

c)  31km (19mi) WNW of Itoman, Japan

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d)  38km (24mi) W of Ginowan, Japan

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e)  1257km (781mi) S of Seoul, South Korea

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	5.4 mb	± 0.04
Location	26.233°N, 127.375°E	--
Depth	53.3 km	± 6.4 km
Number of Phase Applied1	93
Minimum Distance2	388.2 km (3.49°)
Travel Time Residual3	1.33 sec
Azimuthal Gap4	47°

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)