20150430 06:29:56 (UTC) :West of Ribeira Grande, Portugal
earthquake monitor, Portugal earthquake, earthquake realtime
Magnitude : 4.7
Event Time: Time and Date Starting of Earthquake Rupture
 20150430 06:29:56 (UTC)
Earthquake data:
Location : Position of Epicenter
38.524°N 29.162°W
Depth : Depth of starting Rupture
10.0 km
a) 40km (25mi) W of Ribeira Grande, Portugal
b) 170km (106mi) W of Angra do Heroismo, Portugal
c) 318km (198mi) WNW of Ponta Delgada, Portugal
d) 1282km (797mi) NW of Camara de Lobos, Portugal
e) 1740km (1081mi) W of Lisbon, Portugal
Location Uncertainty:
Parameter

Value

Uncertainty

Magnitude^{}

4.7 mb

± 0.1

Location^{}

38.524°N 29.162°W

± 3.8 km

Depth

10.0 km

± 1.9

Number of Phase Applied^{1}

78
 
Minimum Distance^{2}

82.71 km (0.74°)
 
Travel Time Residual^{3}

0.60 sec
 
Azimuthal Gap^{4}

91°

^{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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