USGS Body-Wave Moment Tensor Solution


12/05/12 23:28:42.57

Epicenter:  38.662   70.410
MW 5.6

Depth  14         No. of sta: 93
Moment Tensor;   Scale 10**17 Nm
  Mrr= 0.77       Mtt=-1.06
  Mpp= 0.30       Mrt=-0.14
  Mrp=-2.81       Mtp=-1.85
 Principal axes:
  T  Val=  3.66  Plg=42  Azm= 70
  N       -0.34      35      199
  P       -3.32      28      311

Best Double Couple:Mo=3.5*10**17
 NP1:Strike= 92 Dip=36 Slip= 167
 NP2:       193     82        55

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