USGS Centroid Moment Solution


12/09/08 10:51:43.01

Epicenter:  -3.190  135.084
MW 6.1

12/09/08 10:51:57.70
Centroid:  -3.234  135.037
Depth  28         No. of sta: 73
Moment Tensor;   Scale 10**18 Nm
  Mrr= 0.84       Mtt=-1.27
  Mpp= 0.43       Mrt=-0.69
  Mrp=-0.94       Mtp=-0.31
 Principal axes:
  T  Val=  1.65  Plg=53  Azm=102
  N        0.01      29      240
  P       -1.66      21      342

Best Double Couple:Mo=1.6*10**18
 NP1:Strike=111 Dip=35 Slip= 147
 NP2:       229     72        59

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