USGS Body-Wave Moment Tensor Solution

ANTOFAGASTA, CHILE

13/08/23 08:34:06.33

Epicenter: -22.277  -68.569
MW 5.8

USGS MOMENT TENSOR SOLUTION
Depth 104         No. of sta: 39
Moment Tensor;   Scale 10**17 Nm
  Mrr=-0.97       Mtt=-0.32
  Mpp= 1.29       Mrt=-1.54
  Mrp=-4.94       Mtp= 0.61
 Principal axes:
  T  Val=  5.58  Plg=38  Azm=108
  N       -0.52       0       17
  P       -5.06      52      287

Best Double Couple:Mo=5.3*10**17
 NP1:Strike=201 Dip= 7 Slip= -86
 NP2:        17     83       -90

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