USGS Body-Wave Moment Tensor Solution

SANTA CRUZ ISLANDS

13/02/07 18:59:15.96

Epicenter: -10.984  165.707
MW 6.7

USGS MOMENT TENSOR SOLUTION
Depth  14         No. of sta: 94
Moment Tensor;   Scale 10**19 Nm
  Mrr= 0.02       Mtt= 0.13
  Mpp=-0.15       Mrt=-0.01
  Mrp= 0.29       Mtp=-1.31
 Principal axes:
  T  Val=  1.34  Plg= 9  Azm=223
  N        0.02      77      358
  P       -1.36       9      131

Best Double Couple:Mo=1.4*10**19
 NP1:Strike=357 Dip=90 Slip=  13
 NP2:       267     77       180

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