Magnitude 2.7 Earthquake of Medford, Oklahoma 2014-08-04

2014-08-04 02:38:26 UTC :Medford, Oklahoma EARTHQUAKE

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Magnitude: 2.7

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2014-08-04 02:38:26 UTC

1. 2014-08-03 21:38:26 UTC-05:00 at epicenter

Earthquake data:

Location : Position of Epicenter 

36.673°N 97.834°W

Depth : Depth of starting Rupture 

3.8km (2.3mi)

Region : Medford, Oklahoma

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

a)  17km (11mi) SSW of Medford, Oklahoma

b)  31km (19mi) N of Enid, Oklahoma

c)  67km (42mi) W of Ponca City, Oklahoma

d)  83km (52mi) WSW of Arkansas City, Kansas

e)  136km (85mi) NNW of Oklahoma City, Oklahoma

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	2.7 mb_lg	± 0.06
Location	36.673°N, 97.834°W	--
Depth	3.8 km	± 7.2 km
Number of Phase Applied1	30
Minimum Distance2	22.9 km (0.21°)
Travel Time Residual3	0.76 sec
Azimuthal Gap4	50°

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)