USGS WPhase Moment Solution


11/07/19 19:35:40

Epicenter:  40.127   71.423
MW 6.1

11/07/19 19:35:40.00
Centroid:   40.227   71.423
Depth  19         No. of sta: 42
Moment Tensor;   Scale 10**18 Nm
  Mrr= 1.43       Mtt=-1.08
  Mpp=-0.34       Mrt=-0.76
  Mrp= 0.09       Mtp=-0.05
 Principal axes:
  T  Val=  1.64  Plg=74  Azm=190
  N     = -0.35       3       89
  P     = -1.30      15      358

Best Double Couple:Mo=1.5*10**18
 NP1:Strike= 84 Dip=30 Slip=  84
 NP2:       271     61        94

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.