Magnitude 3.1 Earthquake of The Geysers, California 2014-08-25

2014-08-25 17:16:54 UTC :The Geysers, California EARTHQUAKE

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Magnitude: 3.1

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2014-08-25 17:16:54 UTC
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1. 2014-08-25 10:16:54 UTC-07:00 at epicenter

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Earthquake data:

Location : Position of Epicenter 

1. 38.815°N 122.828°W

Depth : Depth of starting Rupture 

2.4km (1.5mi)

Region :The Geysers, California

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

a)  7km (4mi) NW of The Geysers, California

b)  22km (14mi) N of Healdsburg, California

c)  23km (14mi) SW of Clearlake, California

d)  29km (18mi) N of Windsor, California

e) 118km (73mi) WNW of Sacramento, California

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	3.1 Ml	± 0.50
Location	38.815°N, 122.828°W	± 0.1 km
Depth	2.4 km	± 0.2 km
Number of Phase Applied1	57
Minimum Distance2	1.0 km (0.01°)
Travel Time Residual3	0.05 sec
Azimuthal Gap4	25°

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)