USGS Body-Wave Moment Tensor Solution
12/09/22 06:58:26.42 Epicenter: -20.810 -174.149 MW 5.6 USGS MOMENT TENSOR SOLUTION Depth 11 No. of sta: 14 Moment Tensor; Scale 10**17 Nm Mrr= 2.51 Mtt=-1.76 Mpp=-0.74 Mrt=-0.20 Mrp=-0.87 Mtp=-2.30 Principal axes: T Val= 2.77 Plg=71 Azm= 69 N 0.92 18 228 P -3.69 6 321 Best Double Couple:Mo=3.3*10**17 NP1:Strike= 70 Dip=42 Slip= 118 NP2: 215 54 67
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.