USGS Body-Wave Moment Tensor Solution
11/11/22 18:48:17.25 Epicenter: -15.359 -65.125 MW 6.6 USGS MOMENT TENSOR SOLUTION Depth 556 No. of sta: 81 Moment Tensor; Scale 10**19 Nm Mrr= 0.35 Mtt= 0.04 Mpp=-0.39 Mrt=-0.48 Mrp= 0.88 Mtp= 0.17 Principal axes: T Val= 1.03 Plg=55 Azm=236 N 0.09 5 332 P -1.12 34 66 Best Double Couple:Mo=1.1*10**19 NP1:Strike=332 Dip=79 Slip= 85 NP2: 175 12 113
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.