USGS Body-Wave Moment Tensor Solution

SANTA CRUZ ISLANDS

13/01/31 03:33:43.86

Epicenter: -10.628  166.382
MW 6.0

USGS MOMENT TENSOR SOLUTION
Depth   7         No. of sta: 51
Moment Tensor;   Scale 10**18 Nm
  Mrr=-1.04       Mtt= 0.51
  Mpp= 0.53       Mrt=-0.05
  Mrp= 0.21       Mtp=-0.54
 Principal axes:
  T  Val=  1.07  Plg= 5  Azm=226
  N       -0.01       6      317
  P       -1.07      82       95

Best Double Couple:Mo=1.1*10**18
 NP1:Strike=141 Dip=50 Slip= -83
 NP2:       310     40       -99

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