USGS Centroid Moment Solution


12/06/04 00:45:15.59

Epicenter:   5.286  -82.580
MW 6.3

12/06/04 00:45:34.29
Centroid:   5.382  -81.840
Depth  23         No. of sta: 26
Moment Tensor;   Scale 10**18 Nm
  Mrr=-0.40       Mtt= 0.74
  Mpp=-0.34       Mrt=-1.82
  Mrp=-0.76       Mtp= 2.97
 Principal axes:
  T  Val=  4.03  Plg=23  Azm=142
  N       -1.05      61      283
  P       -2.99      16       45

Best Double Couple:Mo=3.5*10**18
 NP1:Strike=275 Dip=85 Slip=  29
 NP2:       182     62       175

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