Magnitude 4.2 Earthquake of Kahale, Indonesia 2014-09-17

2014-09-17 21:19:40 UTC : Kahale, Indonesia EARTHQUAKE

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Magnitude : 4.2

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2014-09-17 21:19:40 UTC
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1. 2014-09-18 05:19:40 UTC+08:00 at epicenter

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Earthquake data:

Location : Position of Epicenter 

10.341°S 119.029°E

Depth : Depth of starting Rupture

49.9km (31.0mi)

Region : Kahale, Indonesia

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

a)  71km (44mi) S of Kahale, Indonesia

b)  155km (96mi) WSW of Waingapu, Indonesia

c)  210km (130mi) S of Bima, Indonesia

d)  224km (139mi) SSW of Labuhanbajo, Indonesia

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e)  745km (463mi) WSW of Dili, East Timor

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	4.2 mb	± 0.16
Location	10.341°S, 119.029°E	--
Depth	49.9 km	± 10.6 km
Number of Phase Applied1	30
Minimum Distance2	399.6 km (3.59°)
Travel Time Residual3	0.80 sec
Azimuthal Gap4	103°

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)