Friday, August 22, 2014

Magnitude 4.6 Earthquake of Orange Farm, South Africa 2014-08-21

2014-08-21 23:14:46 UTC :Orange Farm, South Africa EARTHQUAKE

earthquake monitor,South Africa earthquake, earthquake realtime

Magnitude: 4.6


Event Time: Time and Date Starting of Earthquake Rupture 


  1. 2014-08-21 23:14:46 UTC

  1. 2014-08-22 01:14:46 UTC+02:00 at epicenter


Earthquake data:

Location : Position of Epicenter 

  1. 26.475°S 27.739°E

Depth : Depth of starting Rupture 

10.0km (6.2mi)


Region : Orange Farm, South Africa



Magnitude 4.6 Earthquake of Orange Farm, South Africa 2014-08-21




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

a) 12km (7mi) W of Orange Farm, South Africa

b)  19km (12mi) SSE of Westonaria, South Africa

c)  24km (15mi) E of Fochville, South Africa

d)  
25km (16mi) SSW of Soweto, South Africa


e)  92km (57mi) SSW of Pretoria, South Africa

Location Uncertainty: 
Parameter
Value
Uncertainty
Magnitude
4.6 mb
± 0.12
Location
26.475°S, 27.740°E
--
Depth
10.0 km
± 1.8 km
Number of Phase Applied1
42

Minimum Distance2
269.2 km (2.42°)

Travel Time Residual3
0.74 sec

Azimuthal Gap4
82°

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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