USGS/SLU Regional Moment Solution
13/09/16 15:01:14.39 Epicenter: 38.706 22.729 MW 5.3 USGS/SLU REGIONAL MOMENT TENSOR Depth 8 No. of sta: 24 Moment Tensor; Scale 10**17 Nm Mrr=-0.95 Mtt= 0.79 Mpp= 0.16 Mrt=-0.45 Mrp= 0.54 Mtp=-0.13 Principal axes: T Val= 0.99 Plg=18 Azm=201 N 0.25 14 295 P -1.24 67 61 Best Double Couple:Mo=1.1*10**17 NP1:Strike=270 Dip=30 Slip=-119 NP2: 122 64 -75
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.