USGS Centroid Moment Solution
KURIL ISLANDS
13/02/28 14:05:50.91 Epicenter: 50.924 157.356 MW 6.8 USGS CENTROID MOMENT TENSOR 13/02/28 14:06:07.09 Centroid: 50.369 157.777 Depth 48 No. of sta:108 Moment Tensor; Scale 10**19 Nm Mrr= 2.07 Mtt=-0.72 Mpp=-1.34 Mrt= 0.82 Mrp= 0.90 Mtp=-0.84 Principal axes: T Val= 2.41 Plg=74 Azm=318 N -0.15 3 217 P -2.27 16 126 Best Double Couple:Mo=2.3*10**19 NP1:Strike= 39 Dip=61 Slip= 94 NP2: 212 30 84
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.
