USGS Body-Wave Moment Tensor Solution


12/11/28 03:09:49.71

Epicenter:  -4.493  -76.095
MW 5.7

Depth 114         No. of sta: 43
Moment Tensor;   Scale 10**17 Nm
  Mrr=-3.95       Mtt=-0.12
  Mpp= 4.08       Mrt=-1.04
  Mrp=-0.50       Mtp=-1.21
 Principal axes:
  T  Val=  4.40  Plg= 2  Azm= 75
  N       -0.11      16      166
  P       -4.29      74      340

Best Double Couple:Mo=4.3*10**17
 NP1:Strike=149 Dip=46 Slip=-113
 NP2:         1     49       -68

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