USGS WPhase Moment Solution
KURIL ISLANDS
12/11/16 18:12:39 Epicenter: 49.269 155.472 MW 6.5 USGS/WPHASE CENTROID MOMENT TENSOR 12/11/16 18:12:39.00 Centroid: 49.169 155.625 Depth 50 No. of sta:105 Moment Tensor; Scale 10**18 Nm Mrr= 4.85 Mtt=-1.74 Mpp=-3.11 Mrt= 2.08 Mrp= 3.85 Mtp=-1.81 Principal axes: T Val= 6.61 Plg=68 Azm=295 N = -0.51 2 31 P = -6.10 21 122 Best Double Couple:Mo=6.4*10**18 NP1:Strike=218 Dip=23 Slip= 97 NP2: 30 67 87
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.
