USGS WPhase Moment Solution
MOLUCCA SEA
12/ 8/26 15: 5:35.00 Epicenter: 2.230 126.865 MW 6.6 USGS/WPHASE CENTROID MOMENT TENSOR 12/ 8/26 15: 5:35.00 Centroid: 2.130 126.865 Depth 100 No. of sta: 36 Moment Tensor; Scale 10**18 Nm Mrr= 4.20 Mtt= 3.88 Mpp=-8.08 Mrt=-4.97 Mrp=-0.71 Mtp= 2.83 Principal axes: T Val= 9.37 Plg=44 Azm=168 N = -0.64 45 344 P = -8.73 2 76 Best Double Couple:Mo=9.1*10**18 NP1:Strike=203 Dip=59 Slip= 147 NP2: 312 62 36
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.
