Magnitude 4.7 Earthquake of Baracatan, Philippines 2014-10-19

2014-10-22 02:30:34 UTC : Baracatan, Philippines EARTHQUAKE

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Magnitude : 4.7

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2014-10-22 02:30:34 UTC
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1. 2014-10-22 10:30:34 UTC+08:00 at epicenter

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Earthquake data:

Location : Position of Epicenter 

6.955°N 125.305°E

Depth : Depth of starting Rupture 

35.6km (22.1mi)

Region : Baracatan, Philippines

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

a)  12km (7mi) W of Baracatan, Philippines

b)  17km (11mi) WNW of Astorga, Philippines

c)  21km (13mi) NNE of Bansalan, Philippines

d)  22km (14mi) E of Makilala, Philippines

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e)  969km (602mi) SSE of Manila, Philippines

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	4.7 mb	± 0.10
Location	6.955°N, 125.305°E	--
Depth	35.6 km	± 3.9 km
Number of Phase Applied1	40
Minimum Distance2	32.8 km (0.30°)
Travel Time Residual3	1.23 sec
Azimuthal Gap4	72°

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)