USGS/SLU Regional Moment Solution

13/03/31 23:27:24.00

Epicenter:  58.978 -153.850
MW 4.7

USGS/SLU REGIONAL MOMENT TENSOR
Depth  98         No. of sta: 29
Moment Tensor;   Scale 10**16 Nm
  Mrr= 0.55       Mtt=-1.33
  Mpp= 0.77       Mrt= 0.44
  Mrp= 0.76       Mtp= 0.06
 Principal axes:
  T  Val=  1.47  Plg=42  Azm=279
  N       -0.04      45       73
  P       -1.43      14      177

Best Double Couple:Mo=1.5*10**16
 NP1:Strike= 54 Dip=72 Slip=  42
 NP2:       309     50       157

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