USGS Centroid Moment Solution


11/11/08 02:59:07.78

Epicenter:  27.274  125.774
MW 6.9

11/11/08 02:59:26.70
Centroid:  27.557  125.840
Depth 223         No. of sta: 149
Moment Tensor;   Scale 10**19 Nm
  Mrr=-2.29       Mtt= 0.02
  Mpp= 2.27       Mrt=-0.85
  Mrp=-1.08       Mtp=-0.45
 Principal axes:
  T  Val=  2.54  Plg=11  Azm= 84
  N        0.30      19      178
  P       -2.84      67      324

Best Double Couple:Mo=2.7*10**19
 NP1:Strike= 10 Dip=59 Slip= -68
 NP2:       151     37      -123

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