Tuesday, September 2, 2014

Magnitude 4.2 Earthquake of Bagalangit, Philippines 2014-09-01

2014-09-01 16:27:31 UTC : Bagalangit, Philippines EARTHQUAKE

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Magnitude: 4.2


Event Time: Time and Date Starting of Earthquake Rupture 


  1. 2014-09-01 16:27:31 UTC

  1. 2014-09-02 00:27:31 UTC+08:00 at epicenter



Earthquake data:

Location : Position of Epicenter 

13.710°N 120.750°E

Depth : Depth of starting Rupture 

182.3km (113.3mi)


Region : Bagalangit, Philippines




Magnitude 4.2 Earthquake of Bagalangit, Philippines 2014-09-01


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

a)  13km (8mi) W of Bagalangit, Philippines

b)  18km (11mi) SE of Calatagan, Philippines

c)  25km (16mi) S of Balayan, Philippines

d)  
25km (16mi) SSW of Calaca, Philippines


e)  102km (63mi) SSW of Manila, Philippines

Location Uncertainty: 
Parameter
Value
Uncertainty
Magnitude
4.2 mb
± 0.11
Location
13.710°N, 120.750°E
--
Depth
182.3 km
± 8.6 km
Number of Phase Applied1
38

Minimum Distance2
975.6 km (8.76°)

Travel Time Residual3
0.69 sec

Azimuthal Gap4
103°

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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