USGS Body-Wave Moment Tensor Solution
12/03/20 18:02:47.89 Epicenter: 16.539 -98.215 MW 7.3 USGS MOMENT TENSOR SOLUTION Depth 25 No. of sta: 54 Moment Tensor; Scale 10**19 Nm Mrr= 3.72 Mtt=-1.41 Mpp=-2.30 Mrt= 7.29 Mrp=-3.86 Mtp= 3.34 Principal axes: T Val= 9.03 Plg=56 Azm= 13 N 0.83 13 122 P -9.86 31 220 Best Double Couple:Mo=9.5*10**19 NP1:Strike=345 Dip=18 Slip= 134 NP2: 119 77 77
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.