Magnitude 2.8 Earthquake of Medford, Oklahoma 2014-09-10

2014-09-10 02:27:01 UTC :Medford, Oklahoma EARTHQUAKE

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Magnitude : 2.8

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2014-09-10 02:27:01 UTC

1. 2014-09-09 21:27:01 UTC-05:00 at epicenter

Earthquake data:

Location : Position of Epicenter 

36.952°N 97.792°W

Depth : Depth of starting Rupture 

4.8km (3.0mi)

Region : Medford, Oklahoma

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

a)  16km (10mi) NNW of Medford, Oklahoma

b)  62km (39mi) N of Enid, Oklahoma

c)  68km (42mi) WNW of Ponca City, Oklahoma

d)  68km (42mi) W of Arkansas City, Kansas

e)  166km (103mi) N of Oklahoma City, Oklahoma

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	2.8 mb_lg	± 0.06
Location	36.952°N, 97.792°W	--
Depth	4.8 km	± 6.5 km
Number of Phase Applied1	27
Minimum Distance2	28.7 km (0.26°)
Travel Time Residual3	0.53 sec
Azimuthal Gap4	97°

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)