USGS Body-Wave Moment Tensor Solution

NEW IRELAND REGION, P.N.G.

12/07/28 20:03:56.76

Epicenter:  -4.655  153.159
MW 6.5

USGS MOMENT TENSOR SOLUTION
Depth  50         No. of sta: 59
Moment Tensor;   Scale 10**18 Nm
  Mrr= 6.96       Mtt=-6.52
  Mpp=-0.44       Mrt= 3.85
  Mrp= 1.78       Mtp= 1.08
 Principal axes:
  T  Val=  8.43  Plg=70  Azm=319
  N       -0.84      14       91
  P       -7.60      14      185

Best Double Couple:Mo=8.1*10**18
 NP1:Strike= 84 Dip=61 Slip=  74
 NP2:       293     33       116

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