USGS Body-Wave Moment Tensor Solution


12/10/08 11:43:35.30

Epicenter:  -4.515  129.081
MW 6.1

Depth  10         No. of sta: 25
Moment Tensor;   Scale 10**18 Nm
  Mrr= 1.52       Mtt=-0.78
  Mpp=-0.74       Mrt=-0.65
  Mrp=-0.14       Mtp= 0.75
 Principal axes:
  T  Val=  1.74  Plg=71  Azm=154
  N       -0.18      17      309
  P       -1.56       7       42

Best Double Couple:Mo=1.6*10**18
 NP1:Strike=297 Dip=55 Slip=  69
 NP2:       150     41       117

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