Magnitude 3.1 Earthquake of Niland, California USA 2013 June 03

2013-06-03 12:43:34 UTC : Niland, California USA EARTHQUAKE

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Magnitude: 3.1

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2013-06-03 12:43:34 UTC

1. 2013-06-03 05:43:34 UTC-07:00 at epicenter

Earthquake data:

Location : Position of Epicenter 

33.233°N 115.625°W

Depth : Depth of starting Rupture 

1.9km (1.2mi)

Region : Niland, California

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

a) 9km (6mi) W of Niland, California

b) 29km (18mi) NNW of Brawley, California

c) 43km (27mi) N of Imperial, California

d) 49km (30mi) N of El Centro, California

e) 331km (206mi) W of Phoenix, Arizona

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	3.1 Ml	± 0.10
Location	33.234°N, 115.625°W	± 0.3 km
Depth	1.9 km	± 0.5 km
Number of Phase Applied1	54
Minimum Distance2	4.0 km (0.04°)
Travel Time Residual3	0.13 sec
Azimuthal Gap4	65°

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)