USGS Body-Wave Moment Tensor Solution
13/08/19 19:39:45.68 Epicenter: -21.496 -68.514 MW 5.3 USGS MOMENT TENSOR SOLUTION Depth 117 No. of sta: 14 Moment Tensor; Scale 10**17 Nm Mrr=-0.25 Mtt=-0.12 Mpp= 0.37 Mrt=-0.31 Mrp=-1.10 Mtp= 0.15 Principal axes: T Val= 1.27 Plg=37 Azm=106 N -0.16 0 16 P -1.11 53 285 Best Double Couple:Mo=1.2*10**17 NP1:Strike=197 Dip= 8 Slip= -89 NP2: 16 82 -90
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.