USGS Body-Wave Moment Tensor Solution


13/03/01 12:53:51.45

Epicenter:  50.922  157.510
MW 6.3

Depth  35         No. of sta:103
Moment Tensor;   Scale 10**18 Nm
  Mrr= 3.29       Mtt=-0.50
  Mpp=-2.79       Mrt= 0.85
  Mrp= 1.32       Mtp=-1.09
 Principal axes:
  T  Val=  3.66  Plg=77  Azm=311
  N       -0.08       4      204
  P       -3.58      13      113

Best Double Couple:Mo=3.6*10**18
 NP1:Strike= 26 Dip=58 Slip=  95
 NP2:       197     32        82

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