USGS Body-Wave Moment Tensor Solution
12/08/18 09:41:54.24 Epicenter: -1.343 120.105 MW 6.3 USGS MOMENT TENSOR SOLUTION Depth 6 No. of sta: 27 Moment Tensor; Scale 10**18 Nm Mrr=-0.15 Mtt= 2.16 Mpp=-2.01 Mrt= 0.21 Mrp=-0.17 Mtp=-2.89 Principal axes: T Val= 3.66 Plg= 4 Azm= 27 N -0.17 86 193 P -3.49 1 297 Best Double Couple:Mo=3.6*10**18 NP1:Strike=162 Dip=88 Slip= 3 NP2: 72 87 178
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.