Magnitude 2.5 Earthquake of Sweetwater, Tennessee 2014-09-20

2014-09-20 19:54:00 UTC :Sweetwater, Tennessee EARTHQUAKE

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Magnitude : 2.5

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2014-09-20 19:54:00 UTC

1. 2014-09-20 15:54:00 UTC-04:00 at epicenter

Earthquake data:

Location : Position of Epicenter 

35.637°N 84.425°W

Depth : Depth of starting Rupture 

14.0km (8.7mi)

Region : Sweetwater, Tennessee

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

a)  5km (3mi) NE of Sweetwater, Tennessee

1. 
   

b)  26km (16mi) NE of Athens, Tennessee

c)  36km (22mi) SW of Farragut, Tennessee

d)  43km (27mi) SSW of Oak Ridge, Tennessee

e)  209km (130mi) N of Atlanta, Georgia

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	2.5 md	± 0.20
Location	35.637°N, 84.425°W	± 0.3 km
Depth	14.0 km	± 0.8 km
Number of Phase Applied1	40
Minimum Distance2	20.0 km (0.18°)
Travel Time Residual3	0.1 sec
Azimuthal Gap4	61°

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)

Magnitude 3.1 Earthquake of Tiptonville, Tennessee 2014-09-01

2014-09-01 04:19:13 UTC :Tiptonville, Tennessee EARTHQUAKE

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Magnitude : 3.1

Event Time: Time and Date Starting of Earthquake Rupture 

1. 2014-09-01 04:19:13 UTC

1. 2014-08-31 23:19:13 UTC-05:00 at epicenter

Earthquake data:

Location : Position of Epicenter 

36.391°N 89.520°W

Depth : Depth of starting Rupture 

6.9km (4.3mi)

Region : Tiptonville, Tennessee

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

a)  4km (2mi) WNW of Tiptonville, Tennessee

1. 
   

b)  41km (25mi) NNW of Dyersburg, Tennessee

c)  41km (25mi) W of Union City, Tennessee

d)  51km (32mi) ENE of Kennett, Missouri

e)  247km (153mi) W of Nashville, Tennessee

Location Uncertainty: 

Parameter	Value	Uncertainty
Magnitude	3.1 md	± 0.20
Location	36.391°N, 89.520°W	± 0.2 km
Depth	6.9 km	± 0.7 km
Number of Phase Applied1	46
Minimum Distance2	5.0 km (0.04°)
Travel Time Residual3	0.05 sec
Azimuthal Gap4	50°

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)

Magnitude 2.5 Earthquake of EASTERN TENNESSEE USA 2013 April 18

2013 April 18 04:06:17 UTC : EASTERN TENNESSEE USA EARTHQUAKE

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Magnitude: 2.5

Date-Time: Thursday, April 18, 2013 at 04:06:17 UTC

Thursday, April 18, 2013 at 12:06:17 AM at epicenter

Earthquake data:

Location : 35.559°N, 85.076°W

Depth : 21.8 km (13.5 miles)

Region : EASTERN TENNESSEE

Distances:

a) 9 km (6 miles) NW (322°) from Dayton, TN

b) 12 km (7 miles) ESE (117°) from Pikeville, TN

c) 60 km (37 miles) NNE (17°) from Chattanooga, TN

c) 209 km (130 miles) NNW (343°) from Atlanta, GA

Location Uncertainty: horizontal +/- 0.6 km (0.4 miles); depth +/- 1 km (0.6 miles)

Parameters: NST= 14, Nph= 24, Dmin=8 km, Rmss=0.1 sec, Gp= 83°, M-type=duration magnitude (Md), Version=A

Magnitude 2.5 Earthquake of TENNESSEE, USA 2012 July 03

2012 July 03 23:27:10 UTC: TENNESSEE USA EARTHQUAKE

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Magnitude: 2.5

Date-Time: Tuesday, July 03, 2012 at 23:27:10 UTC

Tuesday, July 03, 2012 at 06:27:10 PM at epicenter

seismic data:

Location : 36.285°N, 89.447°W

Depth : 4.7 km (2.9 miles)
Region : TENNESSEE

Distances:

a)4 km (2 miles) NE (55°) from Ridgely, TN

b)14 km (8 miles) SW (219°) from Samburg, TN

c)138 km (86 miles) NNE (20°) from Memphis, TN

d)270 km (168 miles) SSE (165°) from St. Louis, MO

Location Uncertainty:horizontal +/- 0.3 km (0.2 miles); depth +/- 0.3 km (0.2 miles)

Parameters: NST= 22, Nph= 31, Dmin=2 km, Rmss=0.06 sec, Gp= 58°, M-type=duration magnitude (Md), Version=A