Magnitude 4.8 Earthquake of Amahusu, Indonesia 2015-06-04

2015-06-04 02:34:24 (UTC) : South of Amahusu, Indonesia

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Magnitude : 4.8

Event Time: Time and Date Starting of Earthquake Rupture 

• 2015-06-04 02:34:24 (UTC)

Earthquake data:

Location : Position of Epicenter 

4.886°S 128.009°E

Depth : Depth of starting Rupture 

71.8 km

Region : Amahusu, Indonesia

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

a) 129km (80mi) S of Amahusu, Indonesia

b) 132km (82mi) S of Ambon, Indonesia

c) 199km (124mi) SSW of Amahai, Indonesia

d) 487km (303mi) NNE of Dili, East Timor

e) 532km (331mi) W of Tual, Indonesia

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	4.8 mb	± 0.2
Location	4.886°S 128.009°E	± 8.9 km
Depth	71.8 km	± 8.0
Number of Phase Applied1	19
Minimum Distance2	915.82 km (8.23°)
Travel Time Residual3	1.61 sec
Azimuthal Gap4	83°

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)