USGS Body-Wave Moment Tensor Solution

SOUTHEAST OF LOYALTY ISLANDS

12/03/03 12:19:56.66

Epicenter: -22.184  170.309
MW 6.6

USGS MOMENT TENSOR SOLUTION
Depth  15         No. of sta: 41
Moment Tensor;   Scale 10**18 Nm
  Mrr=-0.75       Mtt=-1.87
  Mpp= 2.62       Mrt= 1.32
  Mrp= 0.84       Mtp= 8.08
 Principal axes:
  T  Val=  8.98  Plg= 9  Azm=308
  N       -0.93      80      100
  P       -8.05       4      217

Best Double Couple:Mo=8.6*10**18
 NP1:Strike=352 Dip=81 Slip= 177
 NP2:        82     87         9

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