USGS WPhase Moment Solution
VANUATU
11/03/17 2:47:59 Epicenter: -17.339 167.743 MW 6.2 USGS/WPHASE CENTROID MOMENT TENSOR 11/03/17 02:47:59.00 Centroid: -17.139 167.743 Depth 15 No. of sta: 48 Moment Tensor; Scale 10**18 Nm Mrr= 2.13 Mtt=-0.08 Mpp=-2.05 Mrt= 0.75 Mrp=-1.68 Mtp= 0.38 Principal axes: T Val= 2.84 Plg=68 Azm= 56 N = -0.05 6 163 P = -2.79 20 256 Best Double Couple:Mo=2.8*10**18 NP1:Strike=358 Dip=25 Slip= 105 NP2: 161 65 83
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 form 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.
