USGS WPhase Moment Solution
EAST OF SEVERNAYA ZEMLYA
12/12/13 23:03:38 Epicenter: 80.784 121.561 MW 5.5 USGS/WPHASE CENTROID MOMENT TENSOR 12/12/13 23:03:38.00 Centroid: 80.784 121.561 Depth 11 No. of sta: 25 Moment Tensor; Scale 10**17 Nm Mrr=-2.21 Mtt= 0.21 Mpp= 2.00 Mrt= 0.70 Mrp= 0.87 Mtp=-1.06 Principal axes: T Val= 2.54 Plg= 6 Azm=247 N = 0.13 22 340 P = -2.67 66 142 Best Double Couple:Mo=2.6*10**17 NP1:Strike=314 Dip=43 Slip=-123 NP2: 177 55 -62
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.
