USGS Body-Wave Moment Tensor Solution

TONGA

12/09/22 06:58:26.42

Epicenter: -20.810 -174.149
MW 5.6

USGS MOMENT TENSOR SOLUTION
Depth  11         No. of sta: 14
Moment Tensor;   Scale 10**17 Nm
  Mrr= 2.51       Mtt=-1.76
  Mpp=-0.74       Mrt=-0.20
  Mrp=-0.87       Mtp=-2.30
 Principal axes:
  T  Val=  2.77  Plg=71  Azm= 69
  N        0.92      18      228
  P       -3.69       6      321

Best Double Couple:Mo=3.3*10**17
 NP1:Strike= 70 Dip=42 Slip= 118
 NP2:       215     54        67

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