USGS WPhase Moment Solution


12/ 9/ 8 10:51:44.00

Epicenter:  -3.177  135.109
MW 6.0

12/ 9/ 8 10:51:44.00
Centroid:   -3.177  135.409
Depth  23         No. of sta: 20
Moment Tensor;   Scale 10**18 Nm
  Mrr= 0.93       Mtt=-1.15
  Mpp= 0.22       Mrt=-0.13
  Mrp=-0.98       Mtp=-0.25
 Principal axes:
  T  Val=  1.62  Plg=54  Azm= 88
  N     = -0.37      33      246
  P     = -1.25      10      343

Best Double Couple:Mo=1.5*10**18
 NP1:Strike=107 Dip=45 Slip= 141
 NP2:       227     63        52

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

Details on the W-phase inversion algorithm.