USGS Body-Wave Moment Tensor Solution
OFF COAST OF JALISCO, MEXICO
13/04/23 02:06:56.24 Epicenter: 18.619 -107.200 MW 5.3 USGS MOMENT TENSOR SOLUTION Depth 12 No. of sta: 14 Moment Tensor; Scale 10**17 Nm Mrr=-0.08 Mtt=-0.69 Mpp= 0.77 Mrt=-0.06 Mrp=-0.29 Mtp=-0.78 Principal axes: T Val= 1.16 Plg=11 Azm= 67 N -0.10 75 204 P -1.06 10 335 Best Double Couple:Mo=1.1*10**17 NP1:Strike=201 Dip=89 Slip= 15 NP2: 111 75 179
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.