USGS WPhase Moment Solution


13/03/25 23:02:14

Epicenter:  14.599  -90.427
MW 6.2

13/03/25 23:02:14.00
Centroid:   14.699  -90.531
Depth 180         No. of sta: 72
Moment Tensor;   Scale 10**18 Nm
  Mrr= 0.67       Mtt=-1.26
  Mpp= 0.60       Mrt= 1.49
  Mrp=-1.76       Mtp=-0.03
 Principal axes:
  T  Val=  2.71  Plg=47  Azm= 65
  N     = -0.35      22      309
  P     = -2.36      34      203

Best Double Couple:Mo=2.5*10**18
 NP1:Strike=239 Dip=23 Slip=  18
 NP2:       132     83       112

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.