USGS Centroid Moment 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 6.6

 USGS CENTROID MOMENT TENSOR
 11/03/22 07:19:07.00
 Centroid:   37.700  144.084
 Depth  21         No. of sta: 94
 Moment Tensor;   Scale 10**18 Nm
   Mrr=-6.81       Mtt= 2.61
   Mpp= 4.20       Mrt= 5.15
   Mrp=-3.55       Mtp= 2.91
  Principal axes:
   T  Val=  6.44  Plg= 3  Azm=310
   N        3.99      30       41
   P      -10.43      60      216

 Best Double Couple:Mo=8.4*10**18
  NP1:Strike= 12 Dip=50 Slip=-131
  NP2:       246     54       -52

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