USGS WPhase Moment Solution
10/07/18 13:04:09 Epicenter: -5.970 150.430 MW 6.9 USGS/WPHASE CENTROID MOMENT TENSOR 10/07/18 13:04: 9.00 Centroid: -6.170 150.530 Depth 40 No. of sta: 31 Moment Tensor; Scale 10**19 Nm Mrr= 2.77 Mtt=-0.04 Mpp=-2.73 Mrt= 0.22 Mrp= 0.16 Mtp=-0.61 Principal axes: T Val= 2.79 Plg=85 Azm=343 N = 0.08 3 192 P = -2.86 2 102 Best Double Couple:Mo=2.8*10**19 NP1:Strike=188 Dip=43 Slip= 84 NP2: 16 47 95
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.
