Magnitude 4.6 Earthquake of San Pedro de Atacama, Chile 2014-08-26

2014-08-26 13:59:34 UTC :San Pedro de Atacama, Chile EARTHQUAKE

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Magnitude: 4.6

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2014-08-26 13:59:34 UTC

1. 2014-08-26 09:59:34 UTC-04:00 at epicenter

Earthquake data:

Location : Position of Epicenter 

23.219°S 67.163°W

Depth : Depth of starting Rupture 

225.6km (140.2mi)

Region : San Pedro de Atacama, Chile

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

a)  113km (70mi) ESE of San Pedro de Atacama, Chile

b)  185km (115mi) W of Humahuaca, Argentina

c)  199km (124mi) ESE of Calama, Chile

d)  203km (126mi) SW of La Quiaca, Argentina

e)  750km (466mi) S of La Paz, Bolivia

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	4.6 mb	± 0.27
Location	23.219°S, 67.163°W	--
Depth	225.6 km	± 11.6 km
Number of Phase Applied1	33
Minimum Distance2	191.6 km (1.72°)
Travel Time Residual3	0.51 sec
Azimuthal Gap4	96°

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)