USGS Body-Wave Moment Tensor Solution
NEW BRITAIN REGION, P.N.G.
12/11/19 09:44:33.93 Epicenter: -5.751 151.616 MW 5.9 USGS MOMENT TENSOR SOLUTION Depth 12 No. of sta: 55 Moment Tensor; Scale 10**17 Nm Mrr=-5.84 Mtt= 4.17 Mpp= 1.67 Mrt=-1.61 Mrp=-4.29 Mtp= 3.23 Principal axes: T Val= 7.51 Plg=17 Azm=140 N 0.27 17 45 P -7.79 66 272 Best Double Couple:Mo=7.7*10**17 NP1:Strike=254 Dip=32 Slip= -56 NP2: 36 64 -109
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.