USGS Body-Wave Moment Tensor Solution
NEAR S COAST OF PAPUA, INDONESIA
12/10/12 00:31:29.91 Epicenter: -4.866 134.068 MW 6.5 USGS MOMENT TENSOR SOLUTION Depth 22 No. of sta: 38 Moment Tensor; Scale 10**18 Nm Mrr=-5.28 Mtt=-0.86 Mpp= 6.13 Mrt=-1.09 Mrp= 1.45 Mtp= 1.26 Principal axes: T Val= 6.49 Plg= 6 Azm=279 N -0.71 15 187 P -5.78 73 30 Best Double Couple:Mo=6.2*10**18 NP1:Strike=175 Dip=53 Slip=-109 NP2: 26 41 -66
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.