Monday, April 6, 2015

Magnitude 4.8 Earthquake of Yonakuni, Japan 2015-04-06

2015-04-06 11:37:30 (UTC) :West of Yonakuni, Japan

earthquake monitor,Japan earthquake, earthquake realtime

Magnitude : 4.8

Event Time: Time and Date Starting of Earthquake Rupture 
  • 2015-04-06 11:37:30 (UTC)
Earthquake data:

Location : Position of Epicenter 

24.513°N 122.666°E

Depth : Depth of starting Rupture 

83.4 km

Region : Yonakuni, Japan
Magnitude 4.8 Earthquake of Yonakuni, Japan 2015-04-06

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

a) 34km (21mi) W of Yonakuni, Japan

b) 83km (52mi) E of Su'ao, Taiwan

c) 96km (60mi) ESE of Yilan, Taiwan

d) 115km (71mi) SE of Keelung, Taiwan

e) 903km (561mi) ENE of Hong Kong, Hong Kong

Location Uncertainty: 
4.8 mb
± 0.1
24.513°N 122.666°E
± 7.4 km
83.4 km
± 4.8
Number of Phase Applied1

Minimum Distance2
35.29 km (0.32°)

Travel Time Residual3
0.78 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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