Magnitude 4.8 Earthquake of Tomatlan, Mexico 2014-09-08

2014-09-08 13:42:12 UTC :Tomatlan, Mexico EARTHQUAKE

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Magnitude: 4.8

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2014-09-08 13:42:12 UTC

1. 2014-09-08 06:42:12 UTC-07:00 at epicenter

Earthquake data:

Location : Position of Epicenter 

18.803°N 106.953°W

Depth : Depth of starting Rupture 

56.4km (35.1mi)

Region :  Tomatlan, Mexico

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

a)  218km (135mi) SW of Tomatlan, Mexico

b)  255km (158mi) W of Cihuatlan, Mexico

c)  270km (168mi) SW of Puerto Vallarta, Mexico

d)  278km (173mi) W of Manzanillo, Mexico

e)  826km (513mi) W of Mexico City, Mexico

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	4.8 mb	± 0.03
Location	18.803°N, 106.953°W	--
Depth	56.4 km	± 7.5 km
Number of Phase Applied1	407
Minimum Distance2	609.4 km (5.47°)
Travel Time Residual3	0.77 sec
Azimuthal Gap4	95°

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)