Magnitude 5.0 Earthquake of Ilo, Peru 2015-06-01

2015-06-01 11:57:19 (UTC) : South of Ilo, Peru

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Magnitude : 5.0

Event Time: Time and Date Starting of Earthquake Rupture 

• 2015-06-01 11:57:19 (UTC)

Earthquake data:

Location : Position of Epicenter 

18.302°S 71.221°W

Depth : Depth of starting Rupture 

31.2 km

Region : Ilo, Peru

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

a) 74km (46mi) S of Ilo, Peru

b) 98km (61mi) W of Arica, Chile

c) 107km (66mi) WSW of Tacna, Peru

d) 126km (78mi) SSW of Moquegua, Peru

e) 382km (237mi) WSW of La Paz, Bolivia

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	5.0 mb	± 0.0
Location	18.302°S 71.221°W	± 6.9 km
Depth	31.2 km	± 5.2
Number of Phase Applied1	50
Minimum Distance2	93.17 km (0.84°)
Travel Time Residual3	1.49 sec
Azimuthal Gap4	97°

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)