Magnitude 2.5 Earthquake of Green Valley, California 2014-08-31

2014-08-31 13:37:30 UTC :Green Valley, California EARTHQUAKE

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Magnitude : 2.5

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2014-08-31 13:37:30 UTC
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1. 2014-08-31 06:37:30 UTC-07:00 at epicenter

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Earthquake data:

Location : Position of Epicenter 

1. 38.248°N 122.165°W

Depth : Depth of starting Rupture 

0.6km (0.4mi)

Region : Green Valley, California

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

a)  0km (0mi) SSW of Green Valley, California

b)  10km (6mi) W of Fairfield, California

c)  10km (6mi) W of Suisun, California

d)  11km (7mi) ESE of Napa, California

e)  69km (43mi) WSW of Sacramento, California

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	2.5 Md	± 0.20
Location	38.249°N, 122.165°W	± 0.3 km
Depth	0.6 km	± 10.6 km
Number of Phase Applied1	27
Minimum Distance2	14.0 km (0.13°)
Travel Time Residual3	0.16 sec
Azimuthal Gap4	104°

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)