USGS Centroid Moment Solution
SOUTH OF FIJI ISLANDS
11/07/29 07:42:23.26 Epicenter: -23.651 179.822 MW 6.7 USGS CENTROID MOMENT TENSOR 11/07/29 07:42:45.00 Centroid: -23.415 179.720 Depth 545 No. of sta: 30 Moment Tensor; Scale 10**19 Nm Mrr= 1.08 Mtt=-1.26 Mpp= 0.18 Mrt=-0.66 Mrp=-0.55 Mtp=-0.19 Principal axes: T Val= 1.45 Plg=65 Azm=118 N 0.05 18 253 P -1.50 16 348 Best Double Couple:Mo=1.5*10**19 NP1:Strike=103 Dip=33 Slip= 125 NP2: 244 64 70
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.