Magnitude 4.8 Earthquake of San Felipe, Chile 2013 June 13

2013-06-13 10:41:37 UTC : San Felipe, Chile EARTHQUAKE

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Magnitude: 4.8

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2013-06-13 10:41:37 UTC

1. 2013-06-13 06:41:37 UTC-04:00 at epicenter

Earthquake data:

Location : Position of Epicenter 

32.264°S 70.575°W

Depth : Depth of starting Rupture 

79.9km (49.7mi)

Region : San Felipe, Chile

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

a) 55km (34mi) NNE of San Felipe, Chile

b) 63km (39mi) N of Los Andes, Chile

c) 65km (40mi) ENE of La Ligua, Chile

d) 65km (40mi) SE of Salamanca, Chile

e) 132km (82mi) N of Santiago, Chile

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	4.8 mb	± 0.07
Location	32.264°S, 70.575°W	± 27.5 km
Depth	79.9 km	± 9.2 km
Number of Phase Applied1	40
Minimum Distance2	89.1 km (0.80°)
Travel Time Residual3	1.32 sec
Azimuthal Gap4	122°

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)