USGS Centroid Moment Solution

SANTA CRUZ ISLANDS

13/02/01 05:36:40.93

Epicenter: -11.090  165.538
MW 6.0

USGS CENTROID MOMENT TENSOR
13/02/01 05:36:52.79
Centroid: -12.126  165.543
Depth  21         No. of sta: 13
Moment Tensor;   Scale 10**18 Nm
  Mrr= 0.79       Mtt=-0.25
  Mpp=-0.54       Mrt= 1.01
  Mrp=-0.15       Mtp= 0.32
 Principal axes:
  T  Val=  1.41  Plg=59  Azm=358
  N       -0.32      17      118
  P       -1.09      26      216

Best Double Couple:Mo=1.3*10**18
 NP1:Strike=112 Dip=73 Slip=  72
 NP2:       340     25       135

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