USGS Body-Wave Moment Tensor Solution
EASTERN NEW GUINEA REG., P.N.G.
11/12/14 05:04:57.55 Epicenter: -7.541 146.770 MW 7.1 USGS MOMENT TENSOR SOLUTION Depth 138 No. of sta: 56 Moment Tensor; Scale 10**19 Nm Mrr= 0.44 Mtt=-1.22 Mpp= 0.77 Mrt=-0.94 Mrp= 4.48 Mtp= 0.91 Principal axes: T Val= 5.09 Plg=44 Azm=270 N -0.68 16 164 P -4.41 42 59 Best Double Couple:Mo=4.8*10**19 NP1:Strike=344 Dip=89 Slip= 106 NP2: 78 16 4
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.