USGS Centroid Moment Solution

SANTA CRUZ ISLANDS

13/02/06 01:12:26.96

Epicenter: -10.736  165.144
MW 7.9

USGS CENTROID MOMENT TENSOR
13/02/06 01:13:11.29
Centroid: -10.686  164.590
Depth  32         No. of sta:202
Moment Tensor;   Scale 10**20 Nm
  Mrr= 6.23       Mtt=-2.42
  Mpp=-3.81       Mrt= 1.26
  Mrp=-4.74       Mtp= 2.80
 Principal axes:
  T  Val=  8.12  Plg=68  Azm= 88
  N       -0.59      10      331
  P       -7.53      19      237

Best Double Couple:Mo=7.8*10**20
 NP1:Strike=311 Dip=28 Slip=  68
 NP2:       156     64       101

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