USGS Body-Wave Moment Tensor Solution


12/10/08 06:26:22.28

Epicenter:  25.125 -109.698
MW 6.0

Depth  22         No. of sta: 38
Moment Tensor;   Scale 10**18 Nm
  Mrr=-0.05       Mtt=-0.98
  Mpp= 1.03       Mrt=-0.06
  Mrp=-0.28       Mtp=-0.27
 Principal axes:
  T  Val=  1.12  Plg=13  Azm= 83
  N       -0.10      76      238
  P       -1.02       6      352

Best Double Couple:Mo=1.1*10**18
 NP1:Strike=218 Dip=85 Slip=  13
 NP2:       127     77       175

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