USGS Body-Wave Moment Tensor Solution

SANTA CRUZ ISLANDS

13/01/30 23:03:45.74

Epicenter: -10.603  166.391
MW 6.0

USGS MOMENT TENSOR SOLUTION
Depth  11         No. of sta: 23
Moment Tensor;   Scale 10**18 Nm
  Mrr=-0.19       Mtt= 0.26
  Mpp=-0.07       Mrt= 0.18
  Mrp= 0.23       Mtp=-1.05
 Principal axes:
  T  Val=  1.16  Plg= 1  Azm=221
  N       -0.09      72      313
  P       -1.07      18      130

Best Double Couple:Mo=1.1*10**18
 NP1:Strike=174 Dip=78 Slip= -14
 NP2:       267     77      -167

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