USGS Centroid Moment Solution


12/01/15 13:40:16.65

Epicenter: -60.793  -55.729
MW 6.6

12/01/15 13:40:33.90
Centroid: -60.265  -55.656
Depth  21         No. of sta: 70
Moment Tensor;   Scale 10**19 Nm
  Mrr= 0.01       Mtt= 0.85
  Mpp=-0.85       Mrt= 0.03
  Mrp= 0.85       Mtp= 0.10
 Principal axes:
  T  Val=  0.87  Plg=10  Azm=352
  N        0.51      57      246
  P       -1.37      31       88

Best Double Couple:Mo=1.1*10**19
 NP1:Strike=224 Dip=76 Slip=-149
 NP2:       125     60       -16

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