USGS Centroid Moment Solution
OAXACA, MEXICO
12/03/20 18:02:47.89 Epicenter: 16.539 -98.215 MW 7.4 USGS CENTROID MOMENT TENSOR 12/03/20 18:03:14.00 Centroid: 16.822 -97.990 Depth 21 No. of sta: 142 Moment Tensor; Scale 10**20 Nm Mrr= 0.70 Mtt=-0.56 Mpp=-0.15 Mrt= 1.39 Mrp=-0.88 Mtp= 0.25 Principal axes: T Val= 1.80 Plg=56 Azm= 35 N -0.04 2 301 P -1.76 34 210 Best Double Couple:Mo=1.8*10**20 NP1:Strike=122 Dip=79 Slip= 92 NP2: 289 12 78
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.
