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Table 1. Estimated fault parameters for earthquakes.

From: The 2011 off the Pacific coast of Tohoku Earthquake and its aftershocks observed by GEONET

Earthquake

Latitude*

Longitude*

Depth*

Length

Width

Strike

Dip

Rake

Slip

Mw**

(°)

(°)

(km)

(km)

(km)

(°)

(°)

(°)

(m)

Foreshock

38.641±0.116

143.555±0.089

8.3±9.7

63±39

39±72

199±9

17±10

93±10

1.34±3.77

7.34

 

(0.01)

(0.01)

(0.05)

(0.96)

(0.86)

(0.23)

(0.02)

(0.08)

(1.00)

 

Mainshock

38.994±0.020

143.815±0.015

8.0±0.1

90±3

76±2

204

16±0.2

119±0.6

40.88±2.00

8.63***

#1

(0.68)

(0.69)

(0.01)

(0.89)

(0.95)

(0.00)

(0.08)

(1.00)

(1.00)

 

Mainshock

38.303±0.020

143.494±0.013

7.9±0.1

130±2

122±1

204

17±0.2

90±0.6

17.36±0.37

8.63***

#2

(0.76)

(0.69)

(0.01)

(0.97)

(0.98)

(0.00)

(0.34)

(1.00)

(1.00)

 

Mainshock

37.285±0.031

142.680±0.018

7.9±0.1

147±3

104±2

204

16±0.2

85±0.6

4.72±0.10

8.24***

#3

(0.57)

(0.21)

(0.01)

(0.92)

(0.97)

(0.00)

(0.19)

(1.00)

(1.00)

 

Third largest aftershock

39.927±0.075

143.002±0.074

30.9±7.2

40±9

35±9

186±7

12±7

73±9

1.67±0.73

7.24

 

(0.32)

(0.59)

(0.49)

(0.19)

(0.13)

(0.51)

(0.56)

(0.26)

(1.00)

 

Largest aftershock

36.106±0.049

141.777±0.026

8.7±0.9

59±6

61±5

211±3

26±2

104±4

3.76±0.51

7.76

 

(0.91)

(0.82)

(0.16)

(1.00)

(1.00)

(1.00)

(0.96)

(0.77)

(1.00)

 
  1. Optimum values of fault parameters are listed with 1s uncertainties and data resolution in the parentheses. * Locations point to a northern corner of an upper edge of a rectangular fault.
  2. ** Rigidity is assumed to be 40 GPa.
  3. *** Total moment magnitude is 8.87.