USGS/SLU Regional Moment Solution


13/01/06 23:22:32.08

Epicenter:  40.170   21.806
MW 3.9

Depth   4         No. of sta: 16
Moment Tensor;   Scale 10**14 Nm
  Mrr=-7.84       Mtt= 6.33
  Mpp= 1.51       Mrt=-1.36
  Mrp= 3.03       Mtp=-1.48
 Principal axes:
  T  Val=  7.07  Plg= 9  Azm=200
  N        1.71      14      292
  P       -8.79      74       78

Best Double Couple:Mo=8.1*10**14
 NP1:Strike=121 Dip=55 Slip= -73
 NP2:       274     38      -112

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