USGS/SLU Regional Moment Solution


12/12/06 17:48:15.92

Epicenter:  36.940   23.111
MW 4.4

Depth   8         No. of sta: 12
Moment Tensor;   Scale 10**15 Nm
  Mrr=-3.70       Mtt= 0.06
  Mpp= 3.64       Mrt=-0.13
  Mrp= 1.22       Mtp=-1.86
 Principal axes:
  T  Val=  4.60  Plg= 8  Azm=248
  N       -0.69       6      338
  P       -3.91      80      106

Best Double Couple:Mo=4.3*10**15
 NP1:Strike=330 Dip=37 Slip=-100
 NP2:       163     53       -82

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