USGS Body-Wave Moment Tensor Solution
SOUTHEAST OF LOYALTY ISLANDS
12/10/23 09:39:30.61 Epicenter: -22.315 171.688 MW 5.9 USGS MOMENT TENSOR SOLUTION Depth 101 No. of sta: 36 Moment Tensor; Scale 10**17 Nm Mrr= 2.14 Mtt=-3.59 Mpp= 1.45 Mrt= 6.25 Mrp= 3.26 Mtp= 4.45 Principal axes: T Val= 9.52 Plg=42 Azm=313 N -1.41 37 84 P -8.11 26 196 Best Double Couple:Mo=8.9*10**17 NP1:Strike= 78 Dip=81 Slip= 53 NP2: 336 38 165
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.