Magnitude 4.5 Earthquake of Sinabang, Indonesia 2014-08-22

2014-08-22 21:49:21 UTC : Sinabang, Indonesia EARTHQUAKE

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Magnitude: 4.5

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2014-08-22 21:49:21 UTC
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1. 2014-08-23 03:49:21 UTC+06:00 at epicenter

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Earthquake data:

Location : Position of Epicenter 

2.604°N 93.726°E

Depth : Depth of starting Rupture

29.1km (18.1mi)

Region : Sinabang, Indonesia

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

a) 295km (183mi) W of Sinabang, Indonesia

b) 316km (196mi) WSW of Meulaboh, Indonesia

c)  371km (231mi) SSW of Banda Aceh, Indonesia

d) 395km (245mi) SW of Sigli, Indonesia

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e)  887km (551mi) W of Kuala Lumpur, Malaysia

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	4.5 mb	± 0.10
Location	2.604°N, 93.726°E	--
Depth	29.2 km	± 5.0 km
Number of Phase Applied1	39
Minimum Distance2	451.7 km (4.06°)
Travel Time Residual3	1.19 sec
Azimuthal Gap4	108°

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)