USGS Body-Wave Moment Tensor Solution


12/12/05 17:08:12.23

Epicenter:  33.490   59.554
MW 5.6

Depth   9         No. of sta: 66
Moment Tensor;   Scale 10**17 Nm
  Mrr= 1.53       Mtt=-1.35
  Mpp=-0.18       Mrt= 0.43
  Mrp= 1.11       Mtp= 2.65
 Principal axes:
  T  Val=  2.90  Plg=40  Azm=306
  N        0.60      50      135
  P       -3.51       4       40

Best Double Couple:Mo=3.3*10**17
 NP1:Strike=346 Dip=66 Slip= 146
 NP2:        91     60        28

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