USGS Body-Wave Moment Tensor Solution
13/02/16 04:37:35.88 Epicenter: 5.768 125.764 MW 6.2 USGS MOMENT TENSOR SOLUTION Depth 105 No. of sta: 57 Moment Tensor; Scale 10**18 Nm Mrr= 2.28 Mtt=-0.62 Mpp=-1.66 Mrt=-0.90 Mrp= 1.49 Mtp= 0.17 Principal axes: T Val= 2.96 Plg=69 Azm=233 N -0.67 7 340 P -2.29 20 73 Best Double Couple:Mo=2.7*10**18 NP1:Strike=337 Dip=66 Slip= 83 NP2: 175 25 106
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.