USGS Body-Wave Moment Tensor Solution
13/04/19 03:05:53.61 Epicenter: 46.182 150.796 MW 7.2 USGS MOMENT TENSOR SOLUTION Depth 125 No. of sta: 65 Moment Tensor; Scale 10**19 Nm Mrr= 0.98 Mtt= 0.64 Mpp=-1.62 Mrt= 5.95 Mrp= 2.60 Mtp=-1.27 Principal axes: T Val= 6.88 Plg=47 Azm=350 N -0.24 14 244 P -6.64 39 141 Best Double Couple:Mo=6.8*10**19 NP1:Strike= 65 Dip=86 Slip= 104 NP2: 169 15 15
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.