USGS Body-Wave Moment Tensor Solution

SANTIAGO DEL ESTERO, ARGENTINA

12/05/28 05:07:23.02

Epicenter: -28.061  -63.016
MW 6.7

USGS MOMENT TENSOR SOLUTION
Depth 588         No. of sta: 65
Moment Tensor;   Scale 10**19 Nm
  Mrr=-0.90       Mtt=-0.09
  Mpp= 0.99       Mrt=-0.61
  Mrp= 1.23       Mtp= 0.02
 Principal axes:
  T  Val=  1.63  Plg=27  Azm=260
  N        0.06      13      163
  P       -1.70      59       50

Best Double Couple:Mo=1.7*10**19
 NP1:Strike=159 Dip=74 Slip=-104
 NP2:        20     21       -51

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