USGS Body-Wave Moment Tensor Solution

NEAR S COAST OF NEW GUINEA, PNG.

12/12/08 16:35:16.97

Epicenter:  -7.184  143.971
MW 5.6

USGS MOMENT TENSOR SOLUTION
Depth   4         No. of sta: 23
Moment Tensor;   Scale 10**17 Nm
  Mrr= 3.71       Mtt=-2.34
  Mpp=-1.37       Mrt= 1.15
  Mrp=-0.71       Mtp= 1.20
 Principal axes:
  T  Val=  3.97  Plg=79  Azm= 30
  N       -0.56       1      124
  P       -3.41      11      214

Best Double Couple:Mo=3.7*10**17
 NP1:Strike=305 Dip=34 Slip=  91
 NP2:       123     56        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 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