Magnitude 4.4 Earthquake of Waitara, New Zealand 2014-08-31

2014-08-31 14:39:20 UTC : Waitara, New Zealand EARTHQUAKE

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Magnitude: 4.4

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2014-08-31 14:39:20 UTC

1. 2014-09-01 02:39:20 UTC+12:00 at epicenter

Earthquake data:

Location : Position of Epicenter 

38.918°S 175.015°E

Depth : Depth of starting Rupture 

222.4km (138.2mi)

Region : Waitara, New Zealand

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

a)  66km (41mi) E of Waitara, New Zealand

b)  82km (51mi) ENE of New Plymouth, New Zealand

c)  96km (60mi) WSW of Taupo, New Zealand

d)  97km (60mi) NE of Hawera, New Zealand

e)  263km (163mi) N of Wellington, New Zealand

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	4.4 mb	± 0.12
Location	38.918°S, 175.015°E	--
Depth	222.4 km	± 7.1 km
Number of Phase Applied1	35
Minimum Distance2	47.1 km (0.42°)
Travel Time Residual3	0.72 sec
Azimuthal Gap4	50°

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)