USGS WPhase Moment Solution

SOUTHWESTERN SIBERIA, RUSSIA

12/ 2/26  6:17:19.00

Epicenter:  51.731   95.920
MW 6.7

USGS/WPHASE CENTROID MOMENT TENSOR
12/ 2/26  6:17:19.00
Centroid:   51.831   95.436
Depth  11         No. of sta: 25
Moment Tensor;   Scale 10**19 Nm
  Mrr= 0.60       Mtt=-0.45
  Mpp=-0.15       Mrt=-1.08
  Mrp= 0.11       Mtp= 0.51
 Principal axes:
  T  Val=  1.30  Plg=55  Azm=166
  N     =  0.03      18      285
  P     = -1.33      27       25

Best Double Couple:Mo=1.3*10**19
 NP1:Strike=154 Dip=24 Slip= 141
 NP2:       281     75        71

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.