USGS Body-Wave Moment Tensor Solution

SANTA CRUZ ISLANDS

13/02/06 00:07:22.66

Epicenter: -10.878  165.209
MW 6.1

USGS MOMENT TENSOR SOLUTION
Depth   6         No. of sta: 39
Moment Tensor;   Scale 10**18 Nm
  Mrr= 1.01       Mtt= 1.17
  Mpp=-2.18       Mrt= 0.15
  Mrp=-0.83       Mtp=-0.18
 Principal axes:
  T  Val=  1.38  Plg=45  Azm= 16
  N        1.00      41      170
  P       -2.39      14      272

Best Double Couple:Mo=2.1*10**18
 NP1:Strike=152 Dip=70 Slip=  45
 NP2:        43     48      15393

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