Magnitude 4.4 Earthquake of Iquique, Chile 2014-07-15

2014-07-15 11:12:23 UTC : Iquique, Chile EARTHQUAKE

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Magnitude: 4.4

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2014-07-15 11:12:23 UTC

1. 2014-07-15 07:12:23 UTC-04:00 at epicenter

Earthquake data:

Location : Position of Epicenter 

19.941°S 70.159°W

Depth : Depth of starting Rupture 

36.3km (22.5mi)

Region : Iquique, Chile

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

a)  30km (19mi) N of Iquique, Chile

b)  163km (101mi) S of Arica, Chile

c)  214km (133mi) S of Tacna, Peru

d)  238km (148mi) N of Tocopilla, Chile

e)  436km (271mi) SSW of La Paz, Bolivia

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	4.4 mb	± 0.16
Location	19.941°S, 70.160°W	--
Depth	36.3 km	± 7.9 km
Number of Phase Applied1	41
Minimum Distance2	38.3 km (0.34°)
Travel Time Residual3	0.62 sec
Azimuthal Gap4	139°

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)