USGS Body-Wave Moment Tensor Solution

SANTA CRUZ ISLANDS

13/02/06 10:20:34.27

Epicenter: -10.860  165.270
MW 5.9

USGS MOMENT TENSOR SOLUTION
Depth  14         No. of sta: 48
Moment Tensor;   Scale 10**17 Nm
  Mrr=-2.32       Mtt=-2.33
  Mpp= 4.65       Mrt= 2.87
  Mrp=-4.46       Mtp= 3.90
 Principal axes:
  T  Val=  7.43  Plg=20  Azm=106
  N        0.53      43      357
  P       -7.96      41      214

Best Double Couple:Mo=7.7*10**17
 NP1:Strike=242 Dip=46 Slip= -18
 NP2:       345     77      -134

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