USGS/SLU Regional Moment Solution
11/11/06 03:53:10.53 Epicenter: 35.537 -96.747 MW 5.6 USGS/SLU REGIONAL MOMENT TENSOR Depth 7 No. of sta: 32 Moment Tensor; Scale 10**17 Nm Mrr=-0.17 Mtt= 3.22 Mpp=-3.05 Mrt=-0.07 Mrp=-0.28 Mtp=-1.09 Principal axes: T Val= 3.40 Plg= 0 Azm=190 N -0.14 85 95 P -3.26 5 280 Best Double Couple:Mo=3.3*10**17 NP1:Strike= 55 Dip=87 Slip=-176 NP2: 324 86 -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.