USGS WPhase Moment Solution

COSTA RICA

12/10/24  0:45:36.00

Epicenter:  10.118  -85.348
MW 6.5

USGS/WPHASE CENTROID MOMENT TENSOR
12/10/24  0:45:36.00
Centroid:   10.018  -85.348
Depth  19         No. of sta: 27
Moment Tensor;   Scale 10**18 Nm
  Mrr= 3.52       Mtt=-2.60
  Mpp=-0.92       Mrt= 5.45
  Mrp=-1.70       Mtp= 1.72
 Principal axes:
  T  Val=  6.76  Plg=60  Azm=  9
  N     = -0.03       6      111
  P     = -6.74      28      205

Best Double Couple:Mo=6.8*10**18
 NP1:Strike=314 Dip=17 Slip= 113
 NP2:       110     74        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.