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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.