USGS/SLU Regional Moment Solution


12/11/27 19:06:21.58

Epicenter:  40.745   19.634
MW 3.9

Depth  20         No. of sta: 14
Moment Tensor;   Scale 10**14 Nm
  Mrr=-1.56       Mtt= 2.26
  Mpp=-0.70       Mrt= 3.75
  Mrp=-6.25       Mtp=-1.40
 Principal axes:
  T  Val=  7.62  Plg=37  Azm= 44
  N        0.12      15      146
  P       -7.74      49      253

Best Double Couple:Mo=7.7*10**14
 NP1:Strike=327 Dip=84 Slip= -75
 NP2:        79     16      -158

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