Magnitude 4.6 Earthquake of Talcahuano, Chile 2014-07-24

2014-07-24 21:51:10 UTC : Talcahuano, Chile EARTHQUAKE

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Magnitude: 4.6

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2014-07-24 21:51:10 UTC

1. 2014-07-24 16:51:10 UTC-05:00 at epicenter

Earthquake data:

Location : Position of Epicenter 

36.625°S 73.689°W

Depth : Depth of starting Rupture 

13.0km (8.1mi)

Region :  Talcahuano, Chile

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

a)  52km (32mi) W of Talcahuano, Chile

b)  61km (38mi) WNW of Concepcion, Chile

c)  64km (40mi) W of Penco, Chile

d)  65km (40mi) NW of Coronel, Chile

e)  447km (278mi) SW of Santiago, Chile

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	4.6 mb	± 0.17
Location	36.625°S, 73.689°W	--
Depth	13.0 km	± 3.8 km
Number of Phase Applied1	35
Minimum Distance2	64.1 km (0.58°)
Travel Time Residual3	0.62 sec
Azimuthal Gap4	124°

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)