Magnitude 5.1 Earthquake of Iquique, Chile 2014-09-04

2014-09-04 09:26:53 UTC : Iquique, Chile EARTHQUAKE

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Magnitude: 5.1

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2014-09-04 09:26:53 UTC

1. 2014-09-04 05:26:53 UTC-04:00 at epicenter

Earthquake data:

Location : Position of Epicenter 

20.718°S 70.312°W

Depth : Depth of starting Rupture 

31.9km (19.8mi)

Region : Iquique, Chile

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

a)  57km (35mi) SSW of Iquique, Chile

b)  152km (94mi) N of Tocopilla, Chile

c)  240km (149mi) NW of Calama, Chile

d)  248km (154mi) S of Arica, Chile

e)  519km (322mi) SSW of La Paz, Bolivia

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	5.1 mb	± 0.03
Location	20.718°S, 70.312°W	--
Depth	31.9 km	± 3.3 km
Number of Phase Applied1	109
Minimum Distance2	20.0 km (0.18°)
Travel Time Residual3	0.86 sec
Azimuthal Gap4	51°

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)