USGS Body-Wave Moment Tensor Solution

SANTA CRUZ ISLANDS

13/02/20 00:09:19.39

Epicenter: -10.785  166.860
MW 5.6

USGS MOMENT TENSOR SOLUTION
Depth   4         No. of sta: 49
Moment Tensor;   Scale 10**17 Nm
  Mrr=-2.77       Mtt= 0.99
  Mpp= 1.78       Mrt=-0.60
  Mrp= 0.32       Mtp=-1.26
 Principal axes:
  T  Val=  2.77  Plg= 6  Azm=233
  N        0.09       6      142
  P       -2.86      82       11

Best Double Couple:Mo=2.8*10**17
 NP1:Strike=138 Dip=52 Slip= -97
 NP2:       329     39       -81

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