USGS Centroid Moment Solution

VANUATU

12/04/14 22:05:26.99

Epicenter: -18.990  168.739
MW 6.3

USGS CENTROID MOMENT TENSOR
12/04/14 22:05:45.90
Centroid: -18.613  168.611
Depth  10         No. of sta: 95
Moment Tensor;   Scale 10**18 Nm
  Mrr=-3.00       Mtt= 3.31
  Mpp=-0.31       Mrt=-0.61
  Mrp= 1.43       Mtp= 1.22
 Principal axes:
  T  Val=  3.69  Plg= 2  Azm=163
  N        0.09      27      254
  P       -3.78      63       70

Best Double Couple:Mo=3.7*10**18
 NP1:Strike= 97 Dip=52 Slip= -56
 NP2:       229     49      -126

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