USGS WPhase Moment Solution
KURIL ISLANDS
12/ 7/ 8 11:33:3.00 Epicenter: 45.544 151.287 MW 6.0 USGS/WPHASE CENTROID MOMENT TENSOR 12/ 7/ 8 11:33: 3.00 Centroid: 45.544 151.287 Depth 30 No. of sta: 42 Moment Tensor; Scale 10**18 Nm Mrr= 0.54 Mtt=-0.26 Mpp=-0.29 Mrt= 0.57 Mrp= 1.01 Mtp=-0.25 Principal axes: T Val= 1.30 Plg=56 Azm=294 N = -0.04 4 31 P = -1.25 32 124 Best Double Couple:Mo=1.3*10**18 NP1:Strike=233 Dip=13 Slip= 112 NP2: 31 78 85
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.
