USGS Body-Wave Moment Tensor Solution


12/12/02 00:54:20.66

Epicenter: -17.035  167.636
MW 6.0

Depth  34         No. of sta: 42
Moment Tensor;   Scale 10**18 Nm
  Mrr= 1.26       Mtt=-0.46
  Mpp=-0.80       Mrt= 0.25
  Mrp=-0.20       Mtp= 0.72
 Principal axes:
  T  Val=  1.30  Plg=82  Azm= 24
  N        0.11       3      141
  P       -1.41       7      231

Best Double Couple:Mo=1.4*10**18
 NP1:Strike=325 Dip=38 Slip=  96
 NP2:       138     52        86

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