USGS Body-Wave Moment Tensor Solution
11/04/23 04:16:54.97 Epicenter: -10.344 161.234 MW 6.8 USGS MOMENT TENSOR SOLUTION Depth 74 No. of sta: 73 Moment Tensor; Scale 10**19 Nm Mrr= 0.34 Mtt=-0.70 Mpp= 0.36 Mrt=-1.27 Mrp=-0.20 Mtp= 1.13 Principal axes: T Val= 1.73 Plg=37 Azm=136 N 0.15 42 269 P -1.88 26 24 Best Double Couple:Mo=1.8*10**19 NP1:Strike=262 Dip=83 Slip= 47 NP2: 165 43 170
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 form 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.