USGS/SLU Regional Moment Solution

SOUTHERN ONTARIO, CANADA

13/05/17 13:43:22.76

Epicenter:  45.767  -76.396
MW 4.4

USGS/SLU REGIONAL MOMENT TENSOR
Depth  10         No. of sta: 41
Moment Tensor;   Scale 10**15 Nm
  Mrr= 2.66       Mtt= 0.13
  Mpp=-2.79       Mrt= 2.96
  Mrp= 0.22       Mtp= 2.91
 Principal axes:
  T  Val=  5.06  Plg=50  Azm=338
  N       -0.19      38      134
  P       -4.88      12      234

Best Double Couple:Mo=5.0*10**15
 NP1:Strike=115 Dip=67 Slip=  48
 NP2:         1     47       147

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