USGS/SLU Regional Moment Solution
11/11/05 07:12:45.13 Epicenter: 35.553 -96.748 MW 4.8 USGS/SLU REGIONAL MOMENT TENSOR Depth 4 No. of sta: 45 Moment Tensor; Scale 10**16 Nm Mrr=-0.12 Mtt= 1.66 Mpp=-1.54 Mrt= 0.51 Mrp=-0.60 Mtp= 0.82 Principal axes: T Val= 1.92 Plg=11 Azm=348 N 0.08 66 104 P -2.00 21 254 Best Double Couple:Mo=2.0*10**16 NP1:Strike= 33 Dip=68 Slip=-172 NP2: 300 83 -23
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.