USGS/SLU Regional Moment Solution

13/01/10 16:33:35.17

Epicenter:  19.493  -64.460
MW 5.0

USGS/SLU REGIONAL MOMENT TENSOR
Depth   9         No. of sta: 21
Moment Tensor;   Scale 10**16 Nm
  Mrr= 2.75       Mtt=-1.64
  Mpp=-1.11       Mrt= 0.78
  Mrp= 0.58       Mtp= 2.76
 Principal axes:
  T  Val=  3.24  Plg=63  Azm=315
  N        0.91      27      131
  P       -4.15       2      222

Best Double Couple:Mo=3.8*10**16
 NP1:Strike=108 Dip=52 Slip=  55
 NP2:       337     50       127

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