Thursday, September 11, 2014

Magnitude 4.9 Earthquake of Chichi-shima, Japan 2014-09-11

2014-09-11 07:30:25 UTC :Chichi-shima, Japan EARTHQUAKE

earthquake monitor,Japan earthquake, earthquake realtime

Magnitude : 4.9

Event Time: Time and Date Starting of Earthquake Rupture 

  1. 2014-09-11 07:30:25 UTC

  1. 2014-09-11 16:30:25 UTC+09:00 at epicenter

Earthquake data:

Location : Position of Epicenter 

27.301°N 140.360°E

Depth : Depth of starting Rupture 

411.6km (255.7mi)

Region : Chichi-shima, Japan

Magnitude 4.9 Earthquake of Chichi-shima, Japan 2014-09-11

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

a) 185km (115mi) W of Chichi-shima, Japan

b) 827km (514mi) SSE of Shingu, Japan

c) 827km (514mi) S of Shimoda, Japan

d) 834km (518mi) SSE of Oyama, Japan

e) 932km (579mi) S of Tokyo, Japan

Location Uncertainty: 
4.9 mb
± 0.03
27.301°N, 140.360°E
411.6 km
± 6.6 km
Number of Phase Applied1

Minimum Distance2
182.3 km (1.64°)

Travel Time Residual3
0.72 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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