USGS Body-Wave Moment Tensor Solution
12/12/22 16:41:45.05 Epicenter: 22.458 94.750 MW 5.5 USGS MOMENT TENSOR SOLUTION Depth 124 No. of sta: 24 Moment Tensor; Scale 10**17 Nm Mrr= 0.66 Mtt=-1.01 Mpp= 0.35 Mrt=-1.26 Mrp=-0.70 Mtp= 1.00 Principal axes: T Val= 2.06 Plg=44 Azm=130 N -0.21 39 270 P -1.86 21 18 Best Double Couple:Mo=2.0*10**17 NP1:Strike=153 Dip=42 Slip= 160 NP2: 259 77 50
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.