USGS WPhase Moment Solution
EASTERN NEW GUINEA REG., P.N.G.
11/12/14 5: 4:56.00 Epicenter: -7.507 146.790 MW 7.1 USGS/WPHASE CENTROID MOMENT TENSOR 11/12/14 5: 4:56.00 Centroid: -7.507 146.589 Depth 140 No. of sta: 40 Moment Tensor; Scale 10**19 Nm Mrr=-0.21 Mtt=-1.66 Mpp= 1.87 Mrt=-0.93 Mrp= 4.59 Mtp= 1.08 Principal axes: T Val= 5.55 Plg=38 Azm=272 N = -0.99 21 164 P = -4.56 44 52 Best Double Couple:Mo=5.1*10**19 NP1:Strike= 66 Dip=21 Slip= -8 NP2: 164 87 -111
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.
