USGS WPhase Moment Solution

FOX ISLANDS, ALEUTIAN ISLANDS

11/ 6/24  3: 9:39.00

Epicenter:  52.006 -171.837
MW 7.2

USGS/WPHASE CENTROID MOMENT TENSOR
11/ 6/24  3: 9:39.00
Centroid:   51.806 -171.674
Depth  70         No. of sta:132
Moment Tensor;   Scale 10**19 Nm
  Mrr= 0.70       Mtt= 0.95
  Mpp=-1.64       Mrt= 9.05
  Mrp= 2.01       Mtp= 1.65
 Principal axes:
  T  Val= 10.43  Plg=43  Azm=343
  N     = -2.19       6       79
  P     = -8.24      45      176

Best Double Couple:Mo=9.5*10**19
 NP1:Strike=359 Dip= 7 Slip=-170
 NP2:       260     89       -83

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.