USGS/SLU Regional Moment Solution

HAIDA GWAII, CANADA

12/10/28 23:34:23.73

Epicenter:  52.577 -132.249
MW 4.7

USGS/SLU REGIONAL MOMENT TENSOR
Depth   8         No. of sta: 12
Moment Tensor;   Scale 10**16 Nm
  Mrr=-0.55       Mtt= 0.22
  Mpp= 0.33       Mrt=-0.05
  Mrp= 1.36       Mtp=-0.12
 Principal axes:
  T  Val=  1.34  Plg=36  Azm=262
  N        0.21       5      355
  P       -1.55      54       92

Best Double Couple:Mo=1.5*10**16
 NP1:Strike=329 Dip=10 Slip=-117
 NP2:       176     81       -85

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