Magnitude 7.1 Earthquake of Panguna, Papua New Guinea 2015-05-07

2015-05-07 07:10:22 (UTC) :South-West of Panguna, Papua New Guinea

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Magnitude : 7.1

Event Time: Time and Date Starting of Earthquake Rupture 

• 2015-05-07 07:10:22 (UTC)

Earthquake data:

Location : Position of Epicenter 

7.226°S 154.551°E

Depth : Depth of starting Rupture 

23.2 km

Region : Panguna, Papua New Guinea

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

a) 144km (89mi) SW of Panguna, Papua New Guinea

b) 156km (97mi) SW of Arawa, Papua New Guinea

c) 406km (252mi) SE of Kokopo, Papua New Guinea

d) 521km (324mi) ESE of Kimbe, Papua New Guinea

e) 642km (399mi) WNW of Honiara, Solomon Islands

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	7.1 mww	± 0.0
Location	7.226°S 154.551°E	± 7.1 km
Depth	23.2 km	± 3.4
Number of Phase Applied1	168
Minimum Distance2	427.13 km (3.84°)
Travel Time Residual3	1.14 sec
Azimuthal Gap4	10°

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)