USGS Body-Wave Moment Tensor Solution

OFF EAST COAST OF HONSHU, JAPAN

 11/03/22 07:18:45.14
 OFF EAST COAST OF HONSHU, JAPAN 
 Epicenter:  37.269  143.956
 MW 6.3

 USGS MOMENT TENSOR SOLUTION
 Depth  17         No. of sta: 58
 Moment Tensor;   Scale 10**18 Nm
   Mrr=-2.26       Mtt= 0.49
   Mpp= 1.77       Mrt=-0.71
   Mrp=-0.28       Mtp= 2.43
  Principal axes:
   T  Val=  3.71  Plg= 6  Azm=128
   N       -1.24      20      220
   P       -2.47      69       21

 Best Double Couple:Mo=3.3*10**18
  NP1:Strike=197 Dip=42 Slip=-120
  NP2:        55     54       -66
                                      
                                      

Moment Tensor Solution
The figure above shows a visual representation of the style of faulting (focal mechanism) derived from the estimated moment tensor. Shaded areas show quadrants of the focal sphere in which the P-wave first-motions are away form the source, and unshaded areas show quadrants in which the P-wave first-motions are toward the source. The dots represent the axis of maximum compressional strain (in black, called the "P-axis") and the axis of maximum extensional strain (in white, called the "T-axis") resulting from the earthquake.

Moment Tensor Solution