USGS Body-Wave Moment Tensor Solution


13/05/12 10:54:50.75

Epicenter:  26.788   57.748
MW 5.5

Depth  14         No. of sta: 66
Moment Tensor;   Scale 10**17 Nm
  Mrr= 0.01       Mtt=-0.74
  Mpp= 0.73       Mrt= 0.49
  Mrp= 0.30       Mtp= 1.80
 Principal axes:
  T  Val=  2.07  Plg=14  Azm=305
  N       -0.09      74       97
  P       -1.98       7      213

Best Double Couple:Mo=2.0*10**17
 NP1:Strike=348 Dip=75 Slip= 175
 NP2:        80     85        15

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