USGS Body-Wave Moment Tensor Solution
13/03/26 13:04:48.30 Epicenter: 16.212 -98.136 MW 5.4 USGS MOMENT TENSOR SOLUTION Depth 12 No. of sta: 14 Moment Tensor; Scale 10**17 Nm Mrr= 1.18 Mtt=-0.72 Mpp=-0.46 Mrt= 0.22 Mrp=-0.75 Mtp= 0.72 Principal axes: T Val= 1.47 Plg=68 Azm= 94 N 0.02 16 318 P -1.49 14 224 Best Double Couple:Mo=1.5*10**17 NP1:Strike=292 Dip=34 Slip= 60 NP2: 147 61 109
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.