USGS Centroid Moment Solution
EASTERN NEW GUINEA REG., P.N.G.
12/04/17 07:13:50.08 Epicenter: -5.474 147.097 MW 6.8 USGS CENTROID MOMENT TENSOR 12/04/17 07:14:00.79 Centroid: -5.942 147.133 Depth 189 No. of sta: 117 Moment Tensor; Scale 10**19 Nm Mrr= 1.69 Mtt=-2.14 Mpp= 0.45 Mrt= 0.22 Mrp=-0.73 Mtp= 0.66 Principal axes: T Val= 2.03 Plg=65 Azm= 93 N 0.31 24 287 P -2.34 6 195 Best Double Couple:Mo=2.2*10**19 NP1:Strike=126 Dip=55 Slip= 120 NP2: 260 45 54
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.
