USGS Body-Wave Moment Tensor Solution


13/09/07 00:13:29.86

Epicenter:  14.644  -92.104
MW 6.4

Depth  67         No. of sta: 75
Moment Tensor;   Scale 10**18 Nm
  Mrr=-0.68       Mtt=-0.51
  Mpp= 1.19       Mrt= 3.64
  Mrp=-3.31       Mtp= 0.15
 Principal axes:
  T  Val=  4.74  Plg=42  Azm= 54
  N        0.54      10      315
  P       -5.28      47      214

Best Double Couple:Mo=5.0*10**18
 NP1:Strike=210 Dip=10 Slip= -15
 NP2:       314     87      -100

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