Magnitude 3.4 Earthquake of Boley, Oklahoma 2014-08-18

2014-08-18 02:50:09 UTC :Boley, Oklahoma EARTHQUAKE

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Magnitude: 3.4

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2014-08-18 02:50:09 UTC

1. 2014-08-17 21:50:09 UTC-05:00 at epicenter

Earthquake data:

Location : Position of Epicenter 

35.371°N 96.489°W

Depth : Depth of starting Rupture 

8.9km (5.5mi)

Region : Boley, Oklahoma

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

a)  13km (8mi) S of Boley, Oklahoma

b)  39km (24mi) E of Shawnee, Oklahoma

c)  55km (34mi) WSW of Okmulgee, Oklahoma

d)  68km (42mi) NNE of Ada, Oklahoma

e)  93km (58mi) E of Oklahoma City, Oklahoma

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	3.4 mb_lg	± 0.05
Location	35.371°N, 96.489°W	--
Depth	8.9 km	± 5.7 km
Number of Phase Applied1	32
Minimum Distance2	21.9 km (0.20°)
Travel Time Residual3	0.43 sec
Azimuthal Gap4	106°

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)