USGS Body-Wave Moment Tensor Solution


12/11/22 13:07:11.07

Epicenter: -22.768  -63.632
MW 5.9

Depth 546         No. of sta: 28
Moment Tensor;   Scale 10**18 Nm
  Mrr=-0.47       Mtt=-0.18
  Mpp= 0.65       Mrt=-0.15
  Mrp= 0.71       Mtp= 0.49
 Principal axes:
  T  Val=  1.11  Plg=22  Azm=289
  N       -0.12      31      185
  P       -0.98      51       47

Best Double Couple:Mo=1.1*10**18
 NP1:Strike=174 Dip=73 Slip=-123
 NP2:        60     36       -29

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