USGS/SLU Regional Moment Solution

13/03/13 08:05:44.00

Epicenter:  62.552 -151.238
MW 4.7

USGS/SLU REGIONAL MOMENT TENSOR
Depth  89         No. of sta: 76
Moment Tensor;   Scale 10**16 Nm
  Mrr= 1.01       Mtt=-1.23
  Mpp= 0.22       Mrt= 0.37
  Mrp= 0.71       Mtp=-0.15
 Principal axes:
  T  Val=  1.45  Plg=60  Azm=281
  N       -0.11      27       73
  P       -1.34      12      169

Best Double Couple:Mo=1.4*10**16
 NP1:Strike= 57 Dip=62 Slip=  59
 NP2:       289     40       134

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