USGS Body-Wave Moment Tensor Solution


13/01/08 14:16:08.50

Epicenter:  39.658   25.543
MW 5.7

Depth   9         No. of sta: 37
Moment Tensor;   Scale 10**17 Nm
  Mrr=-1.12       Mtt= 4.44
  Mpp=-3.32       Mrt= 0.18
  Mrp=-0.69       Mtp=-2.14
 Principal axes:
  T  Val=  5.01  Plg= 3  Azm= 15
  N       -1.00      77      119
  P       -4.01      12      284

Best Double Couple:Mo=4.6*10**17
 NP1:Strike=329 Dip=84 Slip= -11
 NP2:        60     79      -174

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