USGS WPhase Moment Solution
SEA OF OKHOTSK
12/08/14 2:59:42 Epicenter: 49.795 145.112 MW 7.7 USGS/WPHASE CENTROID MOMENT TENSOR 12/08/14 02:59:42.00 Centroid: 50.195 145.577 Depth 600 No. of sta: 66 Moment Tensor; Scale 10**20 Nm Mrr= 3.46 Mtt=-1.55 Mpp=-1.91 Mrt=-2.67 Mrp=-0.59 Mtp=-2.26 Principal axes: T Val= 4.63 Plg=65 Azm=188 N = 0.02 18 53 P = -4.66 16 317 Best Double Couple:Mo=4.6*10**20 NP1:Strike= 23 Dip=33 Slip= 55 NP2: 243 64 110
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.
