USGS Centroid Moment Solution

NEW IRELAND REGION, P.N.G.

12/07/28 20:03:56.76

Epicenter:  -4.655  153.159
MW 6.5

USGS CENTROID MOMENT TENSOR
12/07/28 20:04:17.20
Centroid:  -4.799  152.944
Depth  59         No. of sta: 104
Moment Tensor;   Scale 10**18 Nm
  Mrr= 6.20       Mtt=-6.76
  Mpp= 0.57       Mrt= 2.84
  Mrp= 1.76       Mtp= 1.56
 Principal axes:
  T  Val=  7.41  Plg=69  Azm=307
  N        0.12      18       95
  P       -7.53      10      189

Best Double Couple:Mo=7.5*10**18
 NP1:Strike= 83 Dip=58 Slip=  68
 NP2:       300     38       121

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