USGS WPhase Moment Solution


11/08/24 17:46:11

Epicenter:  -7.644  -74.506
MW 7.0

11/08/24 17:46:11.00
Centroid:   -7.544  -74.405
Depth 150         No. of sta: 95
Moment Tensor;   Scale 10**19 Nm
  Mrr=-3.29       Mtt=-0.88
  Mpp= 4.17       Mrt= 1.17
  Mrp=-1.29       Mtp=-0.09
 Principal axes:
  T  Val=  4.40  Plg= 9  Azm= 86
  N     = -0.47      19      353
  P     = -3.93      67      202

Best Double Couple:Mo=4.2*10**19
 NP1:Strike=199 Dip=39 Slip= -57
 NP2:       340     58      -113

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.