Magnitude 3.0 Earthquake of Ridgemark, California 2014-08-22

2014-08-22 02:09:10 UTC :Ridgemark, California EARTHQUAKE

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Magnitude: 3.0

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2014-08-22 02:09:10 UTC
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1. 2014-08-21 19:09:10 UTC-07:00 at epicenter

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Earthquake data:

Location : Position of Epicenter 

1. 36.779°N 121.391°W

Depth : Depth of starting Rupture 

3.1km (1.9mi)

Region : Ridgemark, California

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

a)  4km (2mi) SSW of Ridgemark, California

b)  8km (5mi) S of Hollister, California

c)  24km (15mi) E of Prunedale, California

d)  26km (16mi) ENE of Salinas, California

e)  200km (124mi) S of Sacramento, California

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	3.0 Ml	± 0.30
Location	36.779°N, 121.391°W	± 0.1 km
Depth	3.1 km	± 0.5 km
Number of Phase Applied1	54
Minimum Distance2	4.0 km (0.04°)
Travel Time Residual3	0.11 sec
Azimuthal Gap4	22°

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)