USGS/SLU Regional Moment Solution

13/01/11 14:59:54.00

Epicenter:  62.501 -151.363
MW 4.2

USGS/SLU REGIONAL MOMENT TENSOR
Depth  97         No. of sta: 32
Moment Tensor;   Scale 10**15 Nm
  Mrr=-1.24       Mtt= 0.31
  Mpp= 0.93       Mrt= 1.46
  Mrp= 1.12       Mtp= 0.63
 Principal axes:
  T  Val=  2.22  Plg=27  Azm=310
  N        0.04      10       45
  P       -2.26      61      153

Best Double Couple:Mo=2.2*10**15
 NP1:Strike= 16 Dip=20 Slip=-120
 NP2:       228     73       -80

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