USGS Body-Wave Moment Tensor Solution

OFFSHORE MAULE, CHILE

12/12/27 00:37:10.50

Epicenter: -35.779  -73.393
MW 5.7

USGS MOMENT TENSOR SOLUTION
Depth  18         No. of sta: 41
Moment Tensor;   Scale 10**17 Nm
  Mrr= 2.65       Mtt= 0.85
  Mpp=-3.49       Mrt=-0.71
  Mrp=-2.80       Mtp= 0.26
 Principal axes:
  T  Val=  3.92  Plg=65  Azm=124
  N        0.66      13        5
  P       -4.58      21      270

Best Double Couple:Mo=4.3*10**17
 NP1:Strike=338 Dip=26 Slip=  60
 NP2:       191     67       104

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