Tuesday, August 20, 2013

Magnitude 2.6 Earthquake of Green Valley, California USA 2013 August 20

2013-08-20 08:27:23 UTC : Green Valley, California USA EARTHQUAKE

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Magnitude: 2.6

Event Time: Time and Date Starting of Earthquake Rupture 

  1. 2013-08-20 08:27:23 UTC

  1. 2013-08-20 01:27:23 UTC-07:00 at epicenter

Earthquake data:

Location : Position of Epicenter 

34.722°N 118.555°W

Depth : Depth of starting Rupture 

10.0km (6.2mi)

Region : Green Valley, California
green valley, California usa earthquake 2013 august 20

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

a) 17km (11mi) NW of Green Valley, California

b) 26km (16mi) NNE of Castaic, California

c) 32km (20mi) WNW of Quartz Hill, California

36km (22mi) N of Santa Clarita, California

502km (312mi) SSE of Sacramento, California

Location Uncertainty: 
2.6 Ml
± 0.20
34.722°N, 118.555°W
± 0.3 km
10.0 km
± 0.6 km
Number of Phase Applied1

Minimum Distance2
5.0 km (0.04°)

Travel Time Residual3
0.25 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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