Thursday, October 16, 2014

Magnitude 5.8 Earthquake of Hachijo-jima, Japan 2014-10-15

2014-10-15 23:53:00 UTC :Hachijo-jima, Japan EARTHQUAKE

earthquake monitor,Japan earthquake, earthquake realtime

Magnitude : 5.8

Event Time: Time and Date Starting of Earthquake Rupture 

  1. 2014-10-15 23:53:00 UTC

  1. 2014-10-16 08:53:00 UTC+09:00 at epicenter

Earthquake data:

Location : Position of Epicenter 

31.755°N 140.541°E

Depth : Depth of starting Rupture 

49.0km (30.5mi)

Region : Hachijo-jima, Japan

Magnitude 5.8 Earthquake of Hachijo-jima, Japan 2014-10-15

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

a) 162km (101mi) SSE of Hachijo-jima, Japan

b) 355km (221mi) SSE of Shimoda, Japan

c) 363km (226mi) S of Tateyama, Japan

d) 373km (232mi) S of Kawaguchi, Japan

e) 443km (275mi) S of Tokyo, Japan

Location Uncertainty: 
5.8 mb
± 0.03
31.755°N, 140.541°E
49.0 km
± 5.8 km
Number of Phase Applied1

Minimum Distance2
165.8 km (1.49°)

Travel Time Residual3
1.04 sec

Azimuthal Gap4

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)

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