Tuesday, September 30, 2014

Magnitude 4.6 Earthquake of Hengchun, Taiwan 2014-09-29

2014-09-29 16:44:18 UTC : Hengchun, Taiwan EARTHQUAKE

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Magnitude: 4.6

Event Time: Time and Date Starting of Earthquake Rupture 

  1. 2014-09-29 16:44:18 UTC

  1. 2014-09-30 00:44:18 UTC+08:00 at epicenter

Earthquake data:

Location : Position of Epicenter 

21.503°N 121.303°E

Depth : Depth of starting Rupture 

35.7km (22.2mi)

Region : Hengchun, Taiwan

Magnitude 4.6 Earthquake of Hengchun, Taiwan 2014-09-29

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

a)  80km (50mi) SE of Hengchun, Taiwan

b)  139km (86mi) S of Taitung City, Taiwan

c)   160km (99mi) SE of Kaohsiung, Taiwan

199km (124mi) SE of Tainan, Taiwan

e)   743km (462mi) E of Hong Kong, Hong Kong

Location Uncertainty: 
4.6 mb
± 0.11
21.503°N, 121.303°E
35.7 km
± 8.6 km
Number of Phase Applied1

Minimum Distance2
147.4 km (1.32°)

Travel Time Residual3
1.00 sec

Azimuthal Gap4

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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