USGS WPhase Moment Solution


11/11/22 18:48:17.00

Epicenter: -15.359  -65.125
MW 6.6

11/11/22 18:48:17.00
Centroid:  -15.559  -64.918
Depth 550         No. of sta: 17
Moment Tensor;   Scale 10**18 Nm
  Mrr= 3.85       Mtt= 0.55
  Mpp=-4.40       Mrt=-4.68
  Mrp= 8.14       Mtp= 2.83
 Principal axes:
  T  Val=  9.65  Plg=58  Azm=234
  N     =  1.78       3      330
  P     =-11.43      31       63

Best Double Couple:Mo=1.1*10**19
 NP1:Strike=166 Dip=14 Slip= 106
 NP2:       330     77        86

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.