USGS Body-Wave Moment Tensor Solution

WEST OF MACQUARIE ISLAND

12/10/23 09:33:19.55

Epicenter: -57.567  148.055
MW 5.6

USGS MOMENT TENSOR SOLUTION
Depth   9         No. of sta: 16
Moment Tensor;   Scale 10**17 Nm
  Mrr= 0.24       Mtt= 1.69
  Mpp=-1.93       Mrt= 0.45
  Mrp=-1.01       Mtp=-2.63
 Principal axes:
  T  Val=  3.33  Plg=16  Azm= 29
  N        0.12      70      174
  P       -3.45      11      296

Best Double Couple:Mo=3.4*10**17
 NP1:Strike=163 Dip=86 Slip=  19
 NP2:        72     71       176

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