USGS Centroid Moment Solution


12/04/17 03:50:16.64

Epicenter: -32.672  -71.517
MW 6.7

12/04/17 03:50:39.90
Centroid: -33.299  -71.535
Depth  43         No. of sta: 41
Moment Tensor;   Scale 10**19 Nm
  Mrr= 1.18       Mtt=-0.08
  Mpp=-1.10       Mrt= 0.26
  Mrp=-1.06       Mtp= 0.05
 Principal axes:
  T  Val=  1.63  Plg=68  Azm= 70
  N       -0.09       5      172
  P       -1.53      22      264

Best Double Couple:Mo=1.6*10**19
 NP1:Strike=  4 Dip=24 Slip= 103
 NP2:       170     67        85

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