USGS WPhase Moment Solution
NEAR S COAST OF PAPUA, INDONESIA
12/10/12 0:31:30.00 Epicenter: -4.841 134.084 MW 6.6 USGS/WPHASE CENTROID MOMENT TENSOR 12/10/12 0:31:30.00 Centroid: -4.741 133.984 Depth 15 No. of sta: 26 Moment Tensor; Scale 10**18 Nm Mrr=-8.67 Mtt= 0.38 Mpp= 8.29 Mrt=-2.90 Mrp=-4.45 Mtp= 0.84 Principal axes: T Val= 9.64 Plg=14 Azm= 99 N = 0.77 10 192 P =-10.41 71 317 Best Double Couple:Mo=1.0*10**19 NP1:Strike=174 Dip=32 Slip=-111 NP2: 19 61 -77
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.
