Magnitude 6.2 Earthquake of Bonin Islands, Japan region 2014-06-30

 

2014-06-30 19:55:32 UTC: Bonin Islands, Japan region EARTHQUAKE

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Magnitude : 6.2

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2014-06-30 19:55:32 UTC

1. 2014-07-01 04:55:32 UTC+09:00 at epicenter

2014-07-01 01:55:32 UTC+06:00 system time

Earthquake data:

Location : Position of Epicenter 

28.354°N 138.864°E

Depth : Depth of starting Rupture 

512.4km (318.4mi)

Region : Bonin Islands, Japan region

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

a)359km (223mi) WNW of Chichi-shima, Japan

b) 656km (408mi) SSE of Shingu, Japan

c)682km (424mi) SSE of Owase, Japan

d) 683km (424mi) SSE of Tanabe, Japan

e) 817km (508mi) S of Tokyo, Japan

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	6.2 mwb	± 0.04
Location	28.354°N, 138.864°E	--
Depth	512.4 km	± 4.9 km
Number of Phase Applied1	143
Minimum Distance2	536.1 km (4.82°)
Travel Time Residual3	0.74 sec
Azimuthal Gap4	32°

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)