USGS Body-Wave Moment Tensor Solution


13/02/16 22:17:31.39

Epicenter:  43.559  146.736
MW 5.3

Depth  35         No. of sta: 46
Moment Tensor;   Scale 10**17 Nm
  Mrr= 0.61       Mtt=-0.39
  Mpp=-0.22       Mrt= 0.70
  Mrp= 0.45       Mtp=-0.19
 Principal axes:
  T  Val=  1.05  Plg=62  Azm=327
  N       -0.10       0      237
  P       -0.95      28      147

Best Double Couple:Mo=1.0*10**17
 NP1:Strike= 57 Dip=73 Slip=  90
 NP2:       236     17        90

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