USGS Body-Wave Moment Tensor Solution
13/04/22 01:16:33.77 Epicenter: 18.183 -102.063 MW 5.9 USGS MOMENT TENSOR SOLUTION Depth 27 No. of sta: 56 Moment Tensor; Scale 10**17 Nm Mrr= 6.89 Mtt=-5.26 Mpp=-1.63 Mrt=-4.30 Mrp= 3.42 Mtp= 4.45 Principal axes: T Val= 8.68 Plg=72 Azm=224 N 1.34 3 126 P -10.03 18 35 Best Double Couple:Mo=9.4*10**17 NP1:Strike=307 Dip=63 Slip= 93 NP2: 120 27 84
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.