Magnitude 4.4 Earthquake of San Pedro de Atacama, Chile 2014-10-01

2014-10-01 17:26:58 UTC :San Pedro de Atacama, Chile EARTHQUAKE

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Magnitude: 4.4

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2014-10-01 17:26:58 UTC

1. 2014-10-01 13:26:58 UTC-04:00 at epicenter

Earthquake data:

Location : Position of Epicenter 

22.461°S 67.439°W

Depth : Depth of starting Rupture 

162.5km (101.0mi)

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)  94km (58mi) ENE of San Pedro de Atacama, Chile

b)  153km (95mi) E of Calama, Chile

c)  194km (121mi) WSW of Villazon, Bolivia

d)  194km (121mi) WSW of La Quiaca, Argentina

e)  664km (413mi) S of La Paz, Bolivia

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	4.4 mb	± 0.14
Location	22.461°S, 67.439°W	--
Depth	162.5 km	± 7.6 km
Number of Phase Applied1	54
Minimum Distance2	152.4 km (1.37°)
Travel Time Residual3	1.08 sec
Azimuthal Gap4	48°

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)