USGS Body-Wave Moment Tensor Solution

NEW BRITAIN REGION, P.N.G.

13/07/07 20:30:07.47

Epicenter:  -6.016  149.721
MW 6.6

USGS MOMENT TENSOR SOLUTION
Depth  60         No. of sta:  9
Moment Tensor;   Scale 10**19 Nm
  Mrr= 1.04       Mtt=-0.25
  Mpp=-0.80       Mrt=-0.02
  Mrp=-0.27       Mtp=-0.52
 Principal axes:
  T  Val=  1.09  Plg=81  Azm= 74
  N        0.05       7      210
  P       -1.14       6      300

Best Double Couple:Mo=1.1*10**19
 NP1:Strike= 38 Dip=39 Slip= 101
 NP2:       204     52        82

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