Magnitude 4.8 Earthquake of Yonakuni, Japan 2013 May 29

2013-05-29 01:33:58 UTC : Yonakuni, Japan EARTHQUAKE

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Magnitude: 4.8

Event Time: Time and Date Starting of Earthquake Rupture 

2013-05-29 01:33:58 UTC

2013-05-29 09:33:58 UTC+08:00 at epicenter

Earthquake data:

Location : Position of Epicenter 

24.049°N 122.418°E 

Depth : Depth of starting Rupture 

21.1km (13.1mi)

Region : Yonakuni, Japan

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

a) 75km (47mi) SW of Yonakuni, Japan

b) 83km (52mi) E of Hualian, Taiwan

c) 83km (52mi) SE of Su'ao, Taiwan

d) 103km (64mi) SE of Yilan, Taiwan

e) 867km (539mi) ENE of Hong Kong, Hong Kong

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	4.8 mb	± 0.09
Location	24.049°N, 122.418°E	± 9.0 km
Depth	21.1 km	± 8.2 km
Number of Phase Applied1	44
Minimum Distance2	75.7 km (0.68°)
Travel Time Residual3	1.33 sec
Azimuthal Gap4	105°

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)