USGS Centroid Moment Solution


12/02/14 08:19:57.43

Epicenter: -10.368  161.160
MW 6.4

12/02/14 08:20:17.20
Centroid: -10.268  161.070
Depth  56         No. of sta: 57
Moment Tensor;   Scale 10**18 Nm
  Mrr= 2.29       Mtt=-2.22
  Mpp=-0.07       Mrt=-2.48
  Mrp=-0.41       Mtp= 3.49
 Principal axes:
  T  Val=  4.37  Plg=45  Azm=138
  N        0.86      41      291
  P       -5.23      14       33

Best Double Couple:Mo=4.8*10**18
 NP1:Strike=164 Dip=48 Slip= 153
 NP2:       273     70        46

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