USGS Body-Wave Moment Tensor Solution


11/10/21 17:57:16.88

Epicenter: -28.999 -176.183
MW 7.4

Depth  42         No. of sta: 53
Moment Tensor;   Scale 10**20 Nm
  Mrr= 1.35       Mtt=-1.48
  Mpp= 0.13       Mrt= 0.43
  Mrp= 0.09       Mtp=-0.66
 Principal axes:
  T  Val=  1.42  Plg=82  Azm=  4
  N        0.36       3      251
  P       -1.78       8      160

Best Double Couple:Mo=1.6*10**20
 NP1:Strike= 73 Dip=53 Slip=  94
 NP2:       247     37        85

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 from 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