USGS Body-Wave Moment Tensor Solution
13/05/23 21:07:46.52 Epicenter: -20.545 -175.740 MW 6.3 USGS MOMENT TENSOR SOLUTION Depth 149 No. of sta: 35 Moment Tensor; Scale 10**18 Nm Mrr=-0.40 Mtt=-0.50 Mpp= 0.90 Mrt=-0.64 Mrp=-2.81 Mtp= 0.88 Principal axes: T Val= 3.43 Plg=37 Azm=109 N -0.80 11 11 P -2.63 51 268 Best Double Couple:Mo=3.1*10**18 NP1:Strike=246 Dip=13 Slip= -35 NP2: 10 83 -101
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.