USGS/SLU Regional Moment Solution

COQUIMBO, CHILE

12/12/28 13:50:35.56

Epicenter: -29.561  -71.101
MW 4.5

USGS/SLU REGIONAL MOMENT TENSOR
Depth  55         No. of sta: 14
Moment Tensor;   Scale 10**15 Nm
  Mrr= 5.58       Mtt=-1.59
  Mpp=-3.99       Mrt=-1.13
  Mrp=-4.62       Mtp= 0.03
 Principal axes:
  T  Val=  7.57  Plg=67  Azm=107
  N       -1.68       4        8
  P       -5.90      22      276

Best Double Couple:Mo=6.9*10**15
 NP1:Strike=358 Dip=23 Slip=  80
 NP2:       189     67        94

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