Friday, July 18, 2014

Magnitude 4.3 Earthquake of San Pedro de Atacama, Chile 2014-07-18

2014-07-18 09:01:45 UTC : San Pedro de Atacama, Chile EARTHQUAKE

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Magnitude: 4.3


Event Time: Time and Date Starting of Earthquake Rupture 


  1. 2014-07-18 09:01:45 UTC

  1. 2014-07-18 06:01:45 UTC-03:00 at epicenter


Earthquake data:

Location : Position of Epicenter 

24.355°S 67.944°W

Depth : Depth of starting Rupture 

112.6km (69.9mi)


Region : San Pedro de Atacama, Chile

Magnitude 4.3 Earthquake of San Pedro de Atacama, Chile 2014-07-18


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

a) 161km (100mi) S of San Pedro de Atacama, Chile

b) 232km (144mi) SSE of Calama, Chile

c) 260km (162mi) W of Salta, Argentina

d) 
261km (162mi) ESE of Antofagasta, Chile


e) 869km (540mi) S of La Paz, Bolivia

Location Uncertainty: 
Parameter
Value
Uncertainty
Magnitude
4.3 mb
± 0.12
Location
24.355°S, 67.944°W
--
Depth
112.6 km
± 5.5 km
Number of Phase Applied1
60

Minimum Distance2
189.0 km (1.70°)

Travel Time Residual3
0.94 sec

Azimuthal Gap4
63°

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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