USGS Body-Wave Moment Tensor Solution
13/02/25 02:59:42.13 Epicenter: -15.424 -176.376 MW 5.4 USGS MOMENT TENSOR SOLUTION Depth 10 No. of sta: 13 Moment Tensor; Scale 10**17 Nm Mrr= 0.73 Mtt= 0.53 Mpp=-1.26 Mrt=-0.51 Mrp= 0.07 Mtp= 0.58 Principal axes: T Val= 1.19 Plg=46 Azm=168 N 0.26 43 337 P -1.45 6 72 Best Double Couple:Mo=1.3*10**17 NP1:Strike=199 Dip=54 Slip= 147 NP2: 310 64 40
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.