USGS/SLU Regional Moment Solution
13/01/16 07:33:39.10 Epicenter: 62.162 -145.685 MW 3.6 USGS/SLU REGIONAL MOMENT TENSOR Depth 14 No. of sta: 31 Moment Tensor; Scale 10**14 Nm Mrr= 2.28 Mtt=-2.30 Mpp= 0.02 Mrt=-1.74 Mrp=-0.59 Mtp= 0.90 Principal axes: T Val= 3.11 Plg=64 Azm=141 N -0.07 19 278 P -3.04 16 13 Best Double Couple:Mo=3.1*10**14 NP1:Strike=130 Dip=33 Slip= 127 NP2: 268 64 69
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.