Magnitude 4.4 Earthquake of Abepura, Indonesia 2014-08-20

2014-08-20 23:29:43 UTC : Abepura, Indonesia EARTHQUAKE

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Magnitude: 4.4

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2014-08-20 23:29:43 UTC
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1. 2014-08-21 08:29:43 UTC+09:00 at epicenter

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Earthquake data:

Location : Position of Epicenter 

2.659°S 138.535°E

Depth : Depth of starting Rupture

49.6km (30.8mi)

Region : Abepura, Indonesia

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

a) 227km (141mi) W of Abepura, Indonesia

b) 241km (150mi) W of Jayapura, Indonesia

c)  307km (191mi) W of Vanimo, Papua New Guinea

d) 348km (216mi) ENE of Nabire, Indonesia

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e)  1194km (742mi) SSE of Koror Town, Palau

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	4.4 mb	± 0.10
Location	2.659°S, 138.535°E	--
Depth	49.6 km	± 6.5 km
Number of Phase Applied1	47
Minimum Distance2	699.5 km (6.28°)
Travel Time Residual3	0.79 sec
Azimuthal Gap4	52°

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)