USGS/SLU Regional Moment Solution

11/08/23 17:51:04.59

Epicenter:  37.936  -77.933
MW 5.7

USGS/SLU REGIONAL MOMENT TENSOR
Depth   6         No. of sta: 25
Moment Tensor;   Scale 10**17 Nm
  Mrr= 4.20       Mtt=-0.15
  Mpp=-4.05       Mrt= 1.52
  Mrp= 0.96       Mtp=-0.79
 Principal axes:
  T  Val=  4.73  Plg=73  Azm=344
  N       -0.35      15      196
  P       -4.39       9      104

Best Double Couple:Mo=4.6*10**17
 NP1:Strike=177 Dip=39 Slip=  66
 NP2:        26     55       108

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