USGS Body-Wave Moment Tensor Solution

12/09/24 10:31:23.48

Epicenter: -21.187 -174.211
MW 5.5

USGS MOMENT TENSOR SOLUTION
Depth  10         No. of sta: 63
Moment Tensor;   Scale 10**17 Nm
  Mrr= 1.75       Mtt=-1.80
  Mpp= 0.06       Mrt= 0.42
  Mrp= 0.28       Mtp=-0.45
 Principal axes:
  T  Val=  1.83  Plg=81  Azm=307
  N        0.14       6       76
  P       -1.97       7      167

Best Double Couple:Mo=1.9*10**17
 NP1:Strike= 71 Dip=53 Slip=  83
 NP2:       263     38       100

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