USGS Body-Wave Moment Tensor Solution

OFF COAST OF AISEN, CHILE

13/01/23 07:43:02.78

Epicenter: -44.520  -79.000
MW 5.4

USGS MOMENT TENSOR SOLUTION
Depth   4         No. of sta: 23
Moment Tensor;   Scale 10**17 Nm
  Mrr=-0.31       Mtt= 0.62
  Mpp=-0.32       Mrt= 0.37
  Mrp= 0.81       Mtp=-1.20
 Principal axes:
  T  Val=  1.46  Plg= 6  Azm=216
  N        0.24      57      316
  P       -1.69      32      122

Best Double Couple:Mo=1.6*10**17
 NP1:Strike=165 Dip=72 Slip= -28
 NP2:       264     63      -160

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