USGS WPhase Moment Solution

NEW BRITAIN REGION, P.N.G.

11/03/09 21:24:51

Epicenter:  -6.022  149.659
MW 6.4

USGS/WPHASE CENTROID MOMENT TENSOR
11/03/09 21:24:51.00
Centroid:   -6.022  149.659
Depth  29         No. of sta: 22
Moment Tensor;   Scale 10**19 Nm
  Mrr= 0.43       Mtt=-0.40
  Mpp=-0.03       Mrt= 0.33
  Mrp= 0.06       Mtp=-0.05
 Principal axes:
  T  Val=  0.55  Plg=70  Azm=347
  N     = -0.03       1       81
  P     = -0.52      19      171

Best Double Couple:Mo=0.5*10**19
 NP1:Strike=264 Dip=26 Slip=  93
 NP2:        81     64        89

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 form 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