Thursday, September 18, 2014

Magnitude 3.3 Earthquake of Vieques, Puerto Rico 2014-09-17

2014-09-18 05:43:37 UTC Vieques, Puerto Rico EARTHQUAKE

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Magnitude : 3.3

Event Time: Time and Date Starting of Earthquake Rupture 

  1. 2014-09-18 05:43:37 UTC
  2.  
  1. 2014-09-18 01:43:37 UTC-04:00 at epicenter

Earthquake data:

Location : Position of Epicenter 


  1. 19.715°N 65.622°W

Depth : Depth of starting Rupture 

40.0km (24.9mi)

Region :Vieques, Puerto Rico

Magnitude 3.3 Earthquake of Vieques, Puerto Rico 2014-09-18




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

a) 144km (89mi) N of Vieques, Puerto Rico

b)  147km (91mi) NNE of San Juan, Puerto Rico

c)  149km (93mi) N of Rio Grande, Puerto Rico

d)  150km (93mi) NNE of Catano, Puerto Rico


  1. e)  151km (94mi) NNE of Carolina, Puerto Rico

Location Uncertainty: 
Parameter
Value
Uncertainty
Magnitude
3.3 Md
± 0.00
Location
19.715°N, 65.622°W
± 3.7 km
Depth
40.0 km
± 25.3 km
Number of Phase Applied1
8

Minimum Distance2
159.8 km (1.44°)

Travel Time Residual3
0.31 sec

Azimuthal Gap4
324°

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)

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