USGS Body-Wave Moment Tensor Solution
KOMANDORSKIYE OSTROVA REGION
12/05/29 02:40:54.65 Epicenter: 54.381 168.916 MW 5.6 USGS MOMENT TENSOR SOLUTION 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
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.