USGS WPhase Moment Solution
MOLUCCA SEA
12/12/11 6:18:27 Epicenter: 0.594 126.247 MW 6.0 USGS/WPHASE CENTROID MOMENT TENSOR 12/12/11 06:18:27.00 Centroid: 0.394 126.147 Depth 40 No. of sta: 28 Moment Tensor; Scale 10**17 Nm Mrr= 9.51 Mtt=-0.16 Mpp=-9.35 Mrt= 3.24 Mrp=-1.88 Mtp=-4.04 Principal axes: T Val= 10.95 Plg=68 Azm= 24 N = -0.06 21 199 P =-10.89 1 290 Best Double Couple:Mo=1.1*10**18 NP1:Strike= 40 Dip=47 Slip= 119 NP2: 181 50 62
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.
