Tuesday, October 15, 2013

Magnitude 3.4 Earthquake of Ferndale, California USA 2013 October 15

2013-10-15 06:48:51 UTC: Ferndale, California USA EARTHQUAKE

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Magnitude: 3.4

Event Time: Time and Date Starting of Earthquake Rupture 

  1. 2013-10-15 06:48:51 UTC

  1. 2013-10-14 22:48:51 UTC-08:00 at epicenter

Earthquake data:

Location : Position of Epicenter 

40.370°N 125.426°W

Depth : Depth of starting Rupture 

2.5km (1.6mi)

Region : Ferndale, California
ferndale, california usa Earthquake 2013 October 15

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

a) 101km (63mi) WSW of Ferndale, California

b) 110km (68mi) WSW of Fortuna, California

c) 117km (73mi) WSW of Eureka, California

126km (78mi) WSW of Arcata, California

392km (244mi) WNW of Sacramento, California

Location Uncertainty: 
3.4 Ml
± 0.10
40.370°N, 125.426°W
± 6.0 km
2.5 km
± 42.1 km
Number of Phase Applied1

Minimum Distance2
99.0 km (0.89°)

Travel Time Residual3
0.5 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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