Sunday, April 12, 2015

Magnitude 4.6 Earthquake of San Martin, Argentina 2015-04-12

2015-04-12 07:28:11 (UTC) :East of San Martin, Argentina

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Magnitude : 4.6

Event Time: Time and Date Starting of Earthquake Rupture 
  • 2015-04-12 07:28:11 (UTC)
Earthquake data:

Location : Position of Epicenter 

33.036°S 67.502°W

Depth : Depth of starting Rupture 

173.3 km

Region : San Martin, Argentina
Magnitude 4.6 Earthquake of San Martin, Argentina 2015-04-12

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

a) 90km (56mi) E of San Martin, Argentina

b) 112km (70mi) WNW of San Luis, Argentina

c) 112km (70mi) W of La Punta, Argentina

d) 124km (77mi) E of Mendoza, Argentina

e) 296km (184mi) E of Santiago, Chile

Location Uncertainty: 
4.6 mb
± 0.0
33.036°S 67.502°W
± 8.6 km
173.3 km
± 6.8
Number of Phase Applied1

Minimum Distance2
199.37 km (1.79°)

Travel Time Residual3
0.80 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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