USGS Centroid Moment Solution


12/08/14 02:59:42.03

Epicenter:  49.784  145.126
MW 7.7

12/08/14 02:59:57.70
Centroid:  49.517  145.613
Depth 623         No. of sta: 57
Moment Tensor;   Scale 10**20 Nm
  Mrr= 3.77       Mtt=-1.84
  Mpp=-1.93       Mrt=-2.84
  Mrp=-0.71       Mtp=-2.34
 Principal axes:
  T  Val=  4.96  Plg=66  Azm=186
  N        0.01      16       54
  P       -4.97      17      319

Best Double Couple:Mo=5.0*10**20
 NP1:Strike= 26 Dip=32 Slip=  58
 NP2:       242     64       108

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