Magnitude 4.9 Earthquake of Muara Siberut, Indonesia 2014-06-30

 

2014-06-30 21:58:54 UTC : Muara Siberut, Indonesia EARTHQUAKE

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Magnitude: 4.9

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2014-06-30 21:58:54 UTC

2014-07-01 04:58:54 UTC+07:00 at epicenter

2014-07-01 03:58:54 UTC+06:00 system time

Earthquake data:

Location : Position of Epicenter 

2.028°S 99.154°E

Depth : Depth of starting Rupture 

33.5km (20.8mi)

Region : Muara Siberut, Indonesia

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

a) 48km (30mi) S of Muara Siberut, Indonesia

b)179km (111mi) SW of Padang, Indonesia

c)189km (117mi) SW of Pariaman, Indonesia

d)216km (134mi) SW of Solok, Indonesia
e) 637km (396mi) SSW of Kuala Lumpur, Malaysia

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	4.9 mb	± 0.09
Location	2.028°S, 99.154°E	--
Depth	33.5 km	± 6.2 km
Number of Phase Applied1	36
Minimum Distance2	334.3 km (3.00°)
Travel Time Residual3	1.33 sec
Azimuthal Gap4	180°

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)