USGS Body-Wave Moment Tensor Solution

SANTA CRUZ ISLANDS REGION

13/02/07 08:03:41.07

Epicenter: -11.052  164.764
MW 5.8

USGS MOMENT TENSOR SOLUTION
Depth   5         No. of sta: 14
Moment Tensor;   Scale 10**17 Nm
  Mrr=-6.88       Mtt= 1.26
  Mpp= 5.62       Mrt= 1.14
  Mrp= 0.65       Mtp= 0.89
 Principal axes:
  T  Val=  5.86  Plg= 4  Azm=282
  N        1.20       7       12
  P       -7.06      82      162

Best Double Couple:Mo=6.5*10**17
 NP1:Strike=198 Dip=49 Slip= -81
 NP2:         5     42      -100

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