USGS Centroid Moment Solution
KURIL ISLANDS
12/11/16 18:12:39.97 Epicenter: 49.269 155.472 MW 6.5 USGS CENTROID MOMENT TENSOR 12/11/16 18:12:55.70 Centroid: 49.077 155.599 Depth 45 No. of sta: 91 Moment Tensor; Scale 10**18 Nm Mrr= 6.65 Mtt=-2.20 Mpp=-4.45 Mrt= 1.36 Mrp= 2.78 Mtp=-2.70 Principal axes: T Val= 7.36 Plg=77 Azm=291 N -0.42 3 32 P -6.94 13 123 Best Double Couple:Mo=7.2*10**18 NP1:Strike= 31 Dip=58 Slip= 87 NP2: 217 32 95
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.
