USGS Body-Wave Moment Tensor Solution

NEW BRITAIN REGION, P.N.G.

13/03/10 22:51:51.61

Epicenter:  -6.653  148.155
MW 6.5

USGS MOMENT TENSOR SOLUTION
Depth  28         No. of sta: 42
Moment Tensor;   Scale 10**18 Nm
  Mrr= 0.87       Mtt=-0.49
  Mpp=-0.39       Mrt=-2.67
  Mrp= 0.35       Mtp= 6.58
 Principal axes:
  T  Val=  6.63  Plg=17  Azm=137
  N        0.94      68      274
  P       -7.57      15       43

Best Double Couple:Mo=7.2*10**18
 NP1:Strike=271 Dip=89 Slip=  22
 NP2:       180     68       178

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