USGS/SLU Regional Moment Solution
13/08/25 17:49:08.00 Epicenter: 60.056 -152.874 MW 4.4 USGS/SLU REGIONAL MOMENT TENSOR Depth 86 No. of sta: 13 Moment Tensor; Scale 10**15 Nm Mrr= 3.41 Mtt=-3.77 Mpp= 0.36 Mrt=-1.60 Mrp= 0.99 Mtp=-2.22 Principal axes: T Val= 4.33 Plg=62 Azm=234 N 0.54 27 72 P -4.88 8 338 Best Double Couple:Mo=4.6*10**15 NP1:Strike= 41 Dip=44 Slip= 50 NP2: 271 58 122
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.