USGS WPhase Moment Solution


12/ 2/ 6  3:49:16.00

Epicenter:   9.964  123.245
MW 6.7

12/ 2/ 6  3:49:16.00
Centroid:    9.764  123.042
Depth  15         No. of sta: 47
Moment Tensor;   Scale 10**19 Nm
  Mrr= 1.09       Mtt= 0.03
  Mpp=-1.12       Mrt=-0.10
  Mrp= 0.86       Mtp=-0.61
 Principal axes:
  T  Val=  1.45  Plg=65  Azm=238
  N     =  0.15      18       14
  P     = -1.61      16      109

Best Double Couple:Mo=1.5*10**19
 NP1:Strike=224 Dip=33 Slip= 125
 NP2:         5     63        70

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.