USGS Body-Wave Moment Tensor Solution


13/05/12 07:30:03.54

Epicenter:  13.563  -91.285
MW 5.6

Depth  11         No. of sta: 53
Moment Tensor;   Scale 10**17 Nm
  Mrr= 0.67       Mtt=-0.34
  Mpp=-0.33       Mrt= 3.01
  Mrp=-1.06       Mtp= 0.16
 Principal axes:
  T  Val=  3.36  Plg=50  Azm= 18
  N       -0.23       2      110
  P       -3.13      40      202

Best Double Couple:Mo=3.3*10**17
 NP1:Strike=313 Dip= 5 Slip= 113
 NP2:       110     85        88

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