Magnitude 4.2 Earthquake of Tufanganj, India 2014-07-22

2014-07-22 22:58:31 UTC :Tufanganj, India EARTHQUAKE

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Magnitude: 4.2

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2014-07-22 22:58:31 UTC

1. 2014-07-23 04:58:31 UTC+06:00 at epicenter

Earthquake data:

Location : Position of Epicenter 

26.216°N 89.676°E

Depth : Depth of starting Rupture 

15.0km (9.3mi)

Region : Tufanganj, India

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

a)  11km (7mi) S of Tufanganj, India

b) 22km (14mi) ENE of Dinhata, India

c)  26km (16mi) ESE of Koch Bihar, India

d)  27km (17mi) N of Nageswari, Bangladesh

e)  138km (86mi) S of Thimphu, Bhutan

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	4.2 mb	± 0.11
Location	26.216°N, 89.676°E	--
Depth	15.0 km	± 6.5 km
Number of Phase Applied1	38
Minimum Distance2	230.1 km (2.07°)
Travel Time Residual3	0.89 sec
Azimuthal Gap4	188°

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)