Monday, September 15, 2014

Magnitude 4.6 Earthquake of Chichi-shima, Japan 2014-09-15

2014-09-15 01:48:38 UTC :Chichi-shima, Japan EARTHQUAKE

earthquake monitor,Japan earthquake, earthquake realtime

Magnitude : 4.6

Event Time: Time and Date Starting of Earthquake Rupture 

  1. 2014-09-15 01:48:38 UTC

  1. 2014-09-15 10:48:38 UTC+09:00 at epicenter

Earthquake data:

Location : Position of Epicenter 

27.873°N 140.890°E

Depth : Depth of starting Rupture 

67.7km (42.0mi)

Region : Chichi-shima, Japan

Magnitude 4.6 Earthquake of Chichi-shima, Japan 2014-09-15

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

a) 157km (98mi) NW of Chichi-shima, Japan

b) 775km (482mi) SSE of Shimoda, Japan

c) 788km (490mi) SSE of Oyama, Japan

d) 794km (493mi) S of Tateyama, Japan

e) 874km (543mi) S of Tokyo, Japan

Location Uncertainty: 
4.6 mb
± 0.09
27.873°N, 140.890°E
67.7 km
± 8.7 km
Number of Phase Applied1

Minimum Distance2
154.3 km (1.39°)

Travel Time Residual3
0.93 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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