USGS Body-Wave Moment Tensor Solution
11/02/14 03:40:09.25 OFFSHORE MAULE, CHILE Epicenter: -35.389 -72.914 MW 6.5 USGS MOMENT TENSOR SOLUTION Depth 20 No. of sta: 71 Moment Tensor; Scale 10**18 Nm Mrr= 3.09 Mtt= 0.37 Mpp=-3.45 Mrt=-0.40 Mrp=-4.65 Mtp=-4.02 Principal axes: T Val= 6.01 Plg=52 Azm= 59 N 1.66 29 195 P -7.66 22 298 Best Double Couple:Mo=7.0*10**18 NP1:Strike= 68 Dip=35 Slip= 149 NP2: 185 73 59
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 form 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.