Sunday, October 12, 2014

Magnitude 4.8 Earthquake of San Pedro de Atacama, Chile 2014-10-12

2014-10-12 10:44:12 UTC :San Pedro de Atacama, Chile EARTHQUAKE

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Magnitude: 4.8

Event Time: Time and Date Starting of Earthquake Rupture 

  1. 2014-10-12 10:44:12 UTC

  1. 2014-10-12 07:44:12 UTC-03:00 at epicenter

Earthquake data:

Location : Position of Epicenter 

22.901°S 68.121°W

Depth : Depth of starting Rupture 

128.5km (79.8mi)

Region : San Pedro de Atacama, Chile

Magnitude 4.8 Earthquake of San Pedro de Atacama, Chile 2014-10-12

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

a)  10km (6mi) E of San Pedro de Atacama, Chile

b)  96km (60mi) ESE of Calama, Chile

c)  231km (144mi) ESE of Tocopilla, Chile

247km (153mi) ENE of Antofagasta, Chile

e)  708km (440mi) S of La Paz, Bolivia

Location Uncertainty: 
4.8 mb
± 0.04
22.901°S, 68.121°W
128.5 km
± 5.3 km
Number of Phase Applied1

Minimum Distance2
87.3 km (0.78°)

Travel Time Residual3
1.40 sec

Azimuthal Gap4

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)

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