20150416 07:38:50 (UTC) :EastSouthEast of Takahagi, Japan
earthquake monitor, Japan earthquake, earthquake realtime
Magnitude : 4.5
Event Time: Time and Date Starting of Earthquake Rupture
 20150416 07:38:50 (UTC)
Earthquake data:
Location : Position of Epicenter
36.637°N 140.992°E
Depth : Depth of starting Rupture
46.4 km
a) 26km (16mi) ESE of Takahagi, Japan
b) 27km (17mi) SE of Kitaibaraki, Japan
c) 30km (19mi) E of Hitachi, Japan
d) 42km (26mi) ENE of Funaishikawa, Japan
e) 157km (98mi) NE of Tokyo, Japan
Location Uncertainty:
Parameter

Value

Uncertainty

Magnitude^{}

4.5 mb

± 0.1

Location^{}

36.637°N 140.992°E

± 5.5 km

Depth

46.4 km

± 7.7

Number of Phase Applied^{1}

44
 
Minimum Distance^{2}

84.82 km (0.76°)
 
Travel Time Residual^{3}

1.33 sec
 
Azimuthal Gap^{4}

146°

^{1}Number 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.
^{2}Minimum Distance:
Horizontal distance of nearest Station measured in Km from epicenter. The smaller the more accuracy in prediction of depth of EQ.
^{3}Travel 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.
^{4}Azimuthal 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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