Magnitude 3.2 Earthquake of Langston, Oklahoma 2014-08-20

2014-08-20 11:01:39 UTC :Langston, Oklahoma EARTHQUAKE

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Magnitude: 3.2

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2014-08-20 11:01:39 UTC

1. 2014-08-20 06:01:39 UTC-05:00 at epicenter

Earthquake data:

Location : Position of Epicenter 

35.894°N 97.229°W

Depth : Depth of starting Rupture 

7.2km (4.5mi)

Region : Langston, Oklahoma

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

a)  6km (4mi) SSE of Langston, Oklahoma

b)  17km (11mi) E of Guthrie, Oklahoma

c)  29km (18mi) SSW of Stillwater, Oklahoma

d)  34km (21mi) NE of Edmond, Oklahoma

e)  53km (33mi) NNE of Oklahoma City, Oklahoma

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	3.2 mb_lg	± 0.05
Location	35.894°N, 97.229°W	--
Depth	7.2 km	± 6.1 km
Number of Phase Applied1	31
Minimum Distance2	20.7 km (0.19°)
Travel Time Residual3	0.41 sec
Azimuthal Gap4	60°

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)