Magnitude 5.3 Earthquake of Orkney, South Africa 2014-08-05

2014-08-05 10:22:34 UTC :Orkney, South Africa EARTHQUAKE

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Magnitude: 5.3

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2014-08-05 10:22:34 UTC

1. 2014-08-05 12:22:34 UTC+02:00 at epicenter

Earthquake data:

Location : Position of Epicenter 

26.986°S 26.741°E

Depth : Depth of starting Rupture 

10.0km (6.2mi)

Region : Orkney, South Africa

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

a)  6km (4mi) E of Orkney, South Africa

b)  15km (9mi) S of Stilfontein, South Africa

c)  16km (10mi) SSE of Klerksdorp, South Africa

d)  32km (20mi) NW of Viljoenskroon, South Africa

e)  199km (124mi) SW of Pretoria, South Africa

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	5.3 mb	± 0.06
Location	26.986°S, 26.742°E	--
Depth	10.0 km	± 1.8 km
Number of Phase Applied1	80
Minimum Distance2	232.4 km (2.09°)
Travel Time Residual3	0.93 sec
Azimuthal Gap4	48°

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)