USGS Body-Wave Moment Tensor Solution

SANTA CRUZ ISLANDS REGION

13/02/07 00:30:11.35

Epicenter: -11.673  164.961
MW 6.0

USGS MOMENT TENSOR SOLUTION
Depth  11         No. of sta: 28
Moment Tensor;   Scale 10**18 Nm
  Mrr=-0.69       Mtt=-0.01
  Mpp= 0.70       Mrt= 0.13
  Mrp= 0.95       Mtp=-0.13
 Principal axes:
  T  Val=  1.19  Plg=27  Azm=267
  N        0.02       9        2
  P       -1.20      62      108

Best Double Couple:Mo=1.2*10**18
 NP1:Strike=184 Dip=72 Slip= -81
 NP2:       337     20      -116

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