USGS/SLU Regional Moment Solution

12/11/30 14:27:05.00

Epicenter:  61.354 -151.491
MW 4.1

USGS/SLU REGIONAL MOMENT TENSOR
Depth  78         No. of sta: 17
Moment Tensor;   Scale 10**15 Nm
  Mrr=-0.27       Mtt=-0.29
  Mpp= 0.57       Mrt=-0.96
  Mrp= 1.44       Mtp=-0.09
 Principal axes:
  T  Val=  1.86  Plg=39  Azm=247
  N       -0.12      12      147
  P       -1.74      49       44

Best Double Couple:Mo=1.8*10**15
 NP1:Strike=146 Dip=85 Slip=-102
 NP2:        32     13       -25

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