USGS Body-Wave Moment Tensor Solution


13/04/09 11:52:50.10

Epicenter:  28.509   51.620
MW 6.2

Depth  14         No. of sta: 86
Moment Tensor;   Scale 10**18 Nm
  Mrr= 1.38       Mtt=-0.04
  Mpp=-1.34       Mrt=-0.65
  Mrp= 0.06       Mtp= 2.21
 Principal axes:
  T  Val=  2.01  Plg=39  Azm=147
  N        1.03      50      316
  P       -3.04       6       53

Best Double Couple:Mo=2.7*10**18
 NP1:Strike=182 Dip=59 Slip= 154
 NP2:       286     68        34

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