USGS Centroid Moment Solution


12/05/12 23:28:43.75

Epicenter:  38.618   70.402
MW 5.9

12/05/12 23:29:01.70
Centroid:  40.267   71.208
Depth  10         No. of sta: 11
Moment Tensor;   Scale 10**17 Nm
  Mrr= 2.79       Mtt=-0.77
  Mpp=-2.01       Mrt=-0.83
  Mrp=-9.09       Mtp=-0.72
 Principal axes:
  T  Val=  9.79  Plg=52  Azm= 92
  N       -0.64       3      187
  P       -9.15      37      279

Best Double Couple:Mo=9.5*10**17
 NP1:Strike= 31 Dip= 8 Slip= 115
 NP2:       186     82        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