Magnitude 5.1 Earthquake of Mirik, India 2015-04-27

2015-04-27 12:35:57 (UTC) : SouthWest of Mirik, India

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Magnitude : 5.1

Event Time: Time and Date Starting of Earthquake Rupture 

• 2015-04-27 12:35:57 (UTC)

Earthquake data:

Location : Position of Epicenter 

26.859°N 88.141°E

Depth : Depth of starting Rupture 

67.1 km

Region : Mirik, India

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

a) 5km (3mi) SW of Mirik, India

b) 13km (8mi) W of Karsiyang, India

c) 20km (12mi) NNW of Naksalbari, India

d) 21km (13mi) ESE of Ilam, Nepal

e) 163km (101mi) WSW of Thimphu, Bhutan

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	5.1 mb	± 0.0
Location	26.859°N 88.141°E	± 7.6 km
Depth	67.1 km	± 4.0
Number of Phase Applied1	159
Minimum Distance2	398.08 km (3.58°)
Travel Time Residual3	0.88 sec
Azimuthal Gap4	43°

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)