USGS Centroid Moment Solution


13/02/28 14:05:50.91

Epicenter:  50.924  157.356
MW 6.8

13/02/28 14:06:07.09
Centroid:  50.369  157.777
Depth  48         No. of sta:108
Moment Tensor;   Scale 10**19 Nm
  Mrr= 2.07       Mtt=-0.72
  Mpp=-1.34       Mrt= 0.82
  Mrp= 0.90       Mtp=-0.84
 Principal axes:
  T  Val=  2.41  Plg=74  Azm=318
  N       -0.15       3      217
  P       -2.27      16      126

Best Double Couple:Mo=2.3*10**19
 NP1:Strike= 39 Dip=61 Slip=  94
 NP2:       212     30        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