USGS/SLU Regional Moment Solution

13/03/10 21:17:14.00

Epicenter:  58.979 -153.860
MW 4.3

USGS/SLU REGIONAL MOMENT TENSOR
Depth  89         No. of sta: 13
Moment Tensor;   Scale 10**15 Nm
  Mrr= 0.52       Mtt=-2.50
  Mpp= 1.99       Mrt= 0.98
  Mrp= 1.62       Mtp= 1.61
 Principal axes:
  T  Val=  3.61  Plg=31  Azm=290
  N       -0.53      58       92
  P       -3.09       8      195

Best Double Couple:Mo=3.4*10**15
 NP1:Strike= 66 Dip=75 Slip=  29
 NP2:       328     62       163

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