Magnitude 3.3 Earthquake of Medford, Oklahoma 2014-09-02

2014-09-02 04:58:06 UTC :Medford, Oklahoma EARTHQUAKE

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Magnitude: 3.3

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2014-09-02 04:58:06 UTC

1. 2014-09-01 23:58:06 UTC-05:00 at epicenter

Earthquake data:

Location : Position of Epicenter 

36.709°N 97.922°W

Depth : Depth of starting Rupture 

7.3km (4.6mi)

Region : Medford, Oklahoma

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

a)  20km (12mi) WSW of Medford, Oklahoma

b)  34km (21mi) N of Enid, Oklahoma

c)  74km (46mi) W of Ponca City, Oklahoma

d)  87km (54mi) WSW of Arkansas City, Kansas

e)  142km (88mi) NNW of Oklahoma City, Oklahoma

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	3.3 mb_lg	± 0.05
Location	36.709°N, 97.922°W	--
Depth	7.4 km	± 5.1 km
Number of Phase Applied1	36
Minimum Distance2	23.3 km (0.21°)
Travel Time Residual3	0.81 sec
Azimuthal Gap4	77°

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)