USGS Centroid Moment Solution


12/11/11 01:12:38.36

Epicenter:  23.014   95.883
MW 6.8

12/11/11 01:13:07.40
Centroid:  22.755   95.708
Depth  10         No. of sta:146
Moment Tensor;   Scale 10**19 Nm
  Mrr=-0.19       Mtt= 0.18
  Mpp= 0.02       Mrt= 0.11
  Mrp=-0.55       Mtp= 1.92
 Principal axes:
  T  Val=  2.06  Plg= 8  Azm=135
  N       -0.11      73       19
  P       -1.96      15      227

Best Double Couple:Mo=2.0*10**19
 NP1:Strike=  2 Dip=85 Slip=-164
 NP2:       271     74        -5

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