Magnitude 3.7 Earthquake of Enid, Oklahoma 2014-08-31

2014-08-31 07:20:19 UTC :Enid, Oklahoma EARTHQUAKE

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Magnitude: 3.7

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2014-08-31 07:20:19 UTC

1. 2014-08-31 02:20:19 UTC-05:00 at epicenter

Earthquake data:

Location : Position of Epicenter 

36.589°N 97.986°W

Depth : Depth of starting Rupture 

6.2km (3.8mi)

Region : Enid, Oklahoma

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

a)  23km (14mi) NNW of Enid, Oklahoma

b)  81km (50mi) W of Ponca City, Oklahoma

c)  93km (58mi) NNW of Guthrie, Oklahoma

d)  98km (61mi) WNW of Stillwater, Oklahoma

e)  131km (81mi) NNW of Oklahoma City, Oklahoma

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	3.7 mb_lg	± 0.05
Location	36.589°N, 97.986°W	--
Depth	6.2 km	± 7.4 km
Number of Phase Applied1	24
Minimum Distance2	9.4 km (0.08°)
Travel Time Residual3	0.40 sec
Azimuthal Gap4	87°

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)