Magnitude 3.6 Earthquake of Niland, California USA 2013 June 04

2013-06-01 15:06:01 UTC : Niland, California USA EARTHQUAKE

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Magnitude: 3.6

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2013-06-04 19:46:40 UTC

1. 2013-06-04 12:46:40 UTC-07:00 at epicenter

Earthquake data:

Location : Position of Epicenter 

33.209°N 115.555°W

Depth : Depth of starting Rupture 

1.8km (1.1mi)

Region : Westwood, California

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

a) 4km (2mi) SW of Niland, California

b) 25km (16mi) N of Brawley, California

c) 40km (25mi) N of Imperial, California

d) 46km (29mi) N of El Centro, California

e) 324km (201mi) W of Phoenix, Arizona

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	3.6 Ml	± 0.20
Location	33.209°N, 115.555°W	± 0.3 km
Depth	1.8 km	± 0.4 km
Number of Phase Applied1	49
Minimum Distance2	2.0 km (0.02°)
Travel Time Residual3	0.15 sec
Azimuthal Gap4	94°

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)