Magnitude 4.5 Earthquake of Taltal, Chile 2014-09-07

2014-09-07 14:31:45 UTC : Taltal, Chile EARTHQUAKE

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Magnitude: 4.5

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2014-09-07 14:31:45 UTC

1. 2014-09-07 11:31:45 UTC-03:00 at epicenter

Earthquake data:

Location : Position of Epicenter 

25.231°S 69.260°W

Depth : Depth of starting Rupture 

109.6km (68.1mi)

Region : Taltal, Chile

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

a)  124km (77mi) E of Taltal, Chile

b)  148km (92mi) NNE of Diego de Almagro, Chile

c)  209km (130mi) SSE of Antofagasta, Chile

d)  259km (161mi) NNE of Copiapo, Chile

e)  921km (572mi) N of Santiago, Chile

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	4.5 mb	± 0.38
Location	25.231°S, 69.260°W	--
Depth	109.6 km	± 8.6 km
Number of Phase Applied1	33
Minimum Distance2	34.1 km (0.31°)
Travel Time Residual3	0.96 sec
Azimuthal Gap4	88°

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)