USGS/SLU Regional Moment Solution
13/05/16 05:23:52.65 Epicenter: 42.773 -111.207 MW 3.6 USGS/SLU REGIONAL MOMENT TENSOR Depth 9 No. of sta: 23 Moment Tensor; Scale 10**14 Nm Mrr=-0.28 Mtt=-2.91 Mpp= 3.19 Mrt= 0.28 Mrp=-0.66 Mtp= 0.16 Principal axes: T Val= 3.32 Plg=10 Azm= 91 N -0.36 78 304 P -2.95 7 182 Best Double Couple:Mo=3.1*10**14 NP1:Strike=136 Dip=87 Slip= 168 NP2: 227 78 3
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.