USGS Body-Wave Moment Tensor Solution


12/05/29 02:40:54.65

Epicenter:  54.381  168.916
MW 5.6

Depth  18         No. of sta: 25
Moment Tensor;   Scale 10**17 Nm
  Mrr= 0.41       Mtt=-2.74
  Mpp= 2.33       Mrt=-0.63
  Mrp=-0.78       Mtp=-1.51
 Principal axes:
  T  Val=  2.89  Plg=14  Azm= 77
  N        0.44      71      213
  P       -3.34      12      343

Best Double Couple:Mo=3.1*10**17
 NP1:Strike=120 Dip=71 Slip= 179
 NP2:       210     89        19

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