USGS Body-Wave Moment Tensor Solution
12/08/26 15:05:36.23 Epicenter: 2.213 126.862 MW 6.5 USGS MOMENT TENSOR SOLUTION Depth 86 No. of sta: 32 Moment Tensor; Scale 10**18 Nm Mrr= 4.47 Mtt= 1.35 Mpp=-5.82 Mrt=-2.68 Mrp=-0.23 Mtp= 2.12 Principal axes: T Val= 6.14 Plg=58 Azm=168 N 0.28 32 342 P -6.43 3 74 Best Double Couple:Mo=6.3*10**18 NP1:Strike=317 Dip=56 Slip= 50 NP2: 193 51 133
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.