USGS Centroid Moment Solution


12/10/14 04:58:07.60

Epicenter:  -7.188  156.051
MW 5.8

12/10/14 04:58:22.29
Centroid:  -6.960  155.553
Depth  47         No. of sta:  7
Moment Tensor;   Scale 10**17 Nm
  Mrr= 6.60       Mtt=-4.62
  Mpp=-1.98       Mrt=-0.92
  Mrp= 0.48       Mtp= 4.26
 Principal axes:
  T  Val=  6.68  Plg=86  Azm=195
  N        1.16       2      306
  P       -7.84       4       36

Best Double Couple:Mo=7.3*10**17
 NP1:Strike=128 Dip=41 Slip=  92
 NP2:       305     49        88

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