Thursday, May 28, 2015

Magnitude 4.8 Earthquake of Yonakuni, Japan 2015-05-28

2015-05-28 07:57:43 (UTC) : South-West of Yonakuni, Japan

earthquake monitor, Japan earthquake, earthquake realtime

Magnitude : 4.8

Event Time: Time and Date Starting of Earthquake Rupture 
  • 2015-05-28 07:57:43 (UTC)
Earthquake data:

Location : Position of Epicenter 

23.974°N 122.450°E

Depth : Depth of starting Rupture 

30.3 km

Region : Yonakuni, Japan
Magnitude 4.8 Earthquake of Yonakuni, Japan 2015-05-28

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

a) 78km (48mi) SW of Yonakuni, Japan

b) 86km (53mi) E of Hualian, Taiwan

c) 92km (57mi) SE of Su'ao, Taiwan

d) 111km (69mi) SE of Yilan, Taiwan

e) 869km (540mi) ENE of Hong Kong, Hong Kong

Location Uncertainty: 
4.8 mb
± 0.1
23.974°N 122.450°E
± 4.2 km
30.3 km
± 5.3
Number of Phase Applied1

Minimum Distance2
78.93 km (0.71°)

Travel Time Residual3
0.83 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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