USGS Body-Wave Moment Tensor Solution


13/02/28 14:05:50.91

Epicenter:  50.924  157.356
MW 6.8

Depth  46         No. of sta:128
Moment Tensor;   Scale 10**19 Nm
  Mrr= 1.86       Mtt=-0.88
  Mpp=-0.98       Mrt= 0.75
  Mrp= 0.58       Mtp=-0.77
 Principal axes:
  T  Val=  2.10  Plg=76  Azm=329
  N       -0.16       3      225
  P       -1.94      14      135

Best Double Couple:Mo=2.0*10**19
 NP1:Strike= 47 Dip=59 Slip=  94
 NP2:       220     31        84

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