USGS Body-Wave Moment Tensor Solution


12/11/11 10:54:42.25

Epicenter:  22.760   95.887
MW 5.8

Depth   6         No. of sta: 28
Moment Tensor;   Scale 10**17 Nm
  Mrr=-0.19       Mtt= 0.84
  Mpp=-0.65       Mrt=-0.62
  Mrp= 0.54       Mtp= 5.19
 Principal axes:
  T  Val=  5.34  Plg= 1  Azm=139
  N       -0.07      81      237
  P       -5.28       9       49

Best Double Couple:Mo=5.3*10**17
 NP1:Strike= 94 Dip=84 Slip=  -7
 NP2:       184     83      -174

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