Sunday, September 28, 2014

Magnitude 4.5 Earthquake of Calama, Chile 2014-09-28

2014-09-28 09:49:04 UTC : Calama, Chile EARTHQUAKE

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Magnitude: 4.5


Event Time: Time and Date Starting of Earthquake Rupture 


  1. 2014-09-28 09:49:04 UTC

  1. 2014-09-28 06:49:04 UTC-03:00 at epicenter


Earthquake data:

Location : Position of Epicenter 

21.881°S 68.668°W

Depth : Depth of starting Rupture 

125.6km (78.0mi)


Region : Calama, Chile


Magnitude 4.5 Earthquake of Calama, Chile 2014-09-28




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

a)  70km (43mi) NNE of Calama, Chile

b)  159km (99mi) E of Tocopilla, Chile

c)  239km (149mi) SE of Iquique, Chile

d)  
247km (153mi) SW of Uyuni, Bolivia


e)  598km (372mi) S of La Paz, Bolivia

Location Uncertainty: 
Parameter
Value
Uncertainty
Magnitude
4.5 mb
± 0.06
Location
21.881°S, 68.668°W
--
Depth
125.6 km
± 5.4 km
Number of Phase Applied1
100

Minimum Distance2
60.1 km (0.54°)

Travel Time Residual3
0.80 sec

Azimuthal Gap4
54°

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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