Magnitude 2.8 Earthquake of Butte, Alaska 2014-07-10

2014-07-10 16:26:03 UTC : Butte, Alaska EARTHQUAKE

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Magnitude : 2.8

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2014-07-10 16:26:03 UTC
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3. 2014-07-10 08:26:03 UTC-08:00 at epicenter
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1. Earthquake data:

Location : Position of Epicenter 

61.367°N 149.110°W

Depth : Depth of starting Rupture 

43.6km (27.1mi)

Region : Butte, Alaska

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

a) 19km (12mi) SSW of Butte, Alaska

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b)   30km (19mi) ESE of Knik-Fairview, Alaska

c)  45km (28mi) ENE of Anchorage, Alaska

d)  390km (242mi) SSW of Badger, Alaska

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e)  761km (473mi) WNW of Whitehorse, Canada

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	2.8 ml	--
Location	61.367°N, 149.110°W	± 4.5 km
Depth	43.6 km	± 35.0 km
Number of Phase Applied1	6
Minimum Distance2	--
Travel Time Residual3	0.76 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)