USGS WPhase Moment Solution
PHILIPPINE ISLANDS REGION
12/ 8/31 12:47:34.00 Epicenter: 10.827 126.677 MW 7.6 USGS/WPHASE CENTROID MOMENT TENSOR 12/ 8/31 12:47:34.00 Centroid: 10.927 126.982 Depth 50 No. of sta:100 Moment Tensor; Scale 10**20 Nm Mrr= 2.69 Mtt= 0.47 Mpp=-3.16 Mrt=-0.85 Mrp=-0.17 Mtp=-0.22 Principal axes: T Val= 2.98 Plg=71 Azm=177 N = 0.20 18 4 P = -3.18 2 273 Best Double Couple:Mo=3.1*10**20 NP1:Strike=346 Dip=46 Slip= 64 NP2: 201 50 114
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.
