USGS Centroid Moment Solution


12/09/27 23:53:49.29

Epicenter:  -8.814  157.557
MW 5.8

12/09/27 23:54:01.70
Centroid:  -8.296  156.703
Depth  10         No. of sta: 11
Moment Tensor;   Scale 10**17 Nm
  Mrr= 3.32       Mtt=-1.32
  Mpp=-2.00       Mrt= 0.47
  Mrp=-4.83       Mtp= 1.87
 Principal axes:
  T  Val=  6.22  Plg=58  Azm= 98
  N       -0.57      15      342
  P       -5.65      27      244

Best Double Couple:Mo=5.9*10**17
 NP1:Strike=301 Dip=23 Slip=  47
 NP2:       166     74       106

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