Wednesday, April 29, 2015

Magnitude 4.1 Earthquake of Perry, Oklahoma 2015-04-29

2015-04-29 16:42:26 (UTC) :West of Perry, Oklahoma

earthquake monitor, Oklahoma earthquake, earthquake realtime

Magnitude : 4.1

Event Time: Time and Date Starting of Earthquake Rupture 
  • 2015-04-29 16:42:26 (UTC)
Earthquake data:

Location : Position of Epicenter 

36.289°N 97.527°W

Depth : Depth of starting Rupture 

2.2 km

Region : West of Perry, Oklahoma
Magnitude 4.1 Earthquake of Perry, Oklahoma 2015-04-29

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

a) 21km (13mi) W of Perry, Oklahoma

b) 33km (21mi) ESE of Enid, Oklahoma

c) 46km (29mi) WNW of Stillwater, Oklahoma

d) 46km (29mi) NNW of Guthrie, Oklahoma

e) 91km (57mi) N of Oklahoma City, Oklahoma

Location Uncertainty: 
4.1 mb_lg
± 0.0
36.289°N 97.527°W
± 1.1 km
2.2 km
± 7.9
Number of Phase Applied1

Minimum Distance2
47.42 km (0.43°)

Travel Time Residual3
0.22 sec

Azimuthal Gap4

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)

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