USGS/SLU Regional Moment Solution
11/10/20 12:24:40.58 Epicenter: 28.803 -98.154 MW 4.8 USGS/SLU REGIONAL MOMENT TENSOR Depth 5 No. of sta: 22 Moment Tensor; Scale 10**16 Nm Mrr=-1.05 Mtt= 0.73 Mpp= 0.32 Mrt=-1.14 Mrp=-0.91 Mtp= 0.46 Principal axes: T Val= 1.78 Plg=27 Azm=145 N 0.03 3 53 P -1.80 63 318 Best Double Couple:Mo=1.8*10**16 NP1:Strike= 53 Dip=72 Slip= -93 NP2: 241 18 -82
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.