USGS WPhase Moment Solution
GUERRERO, MEXICO
12/11/15 9:20:23.00 Epicenter: 18.406 -100.373 MW 6.1 USGS/WPHASE CENTROID MOMENT TENSOR 12/11/15 9:20:23.00 Centroid: 18.406 -100.268 Depth 60 No. of sta: 64 Moment Tensor; Scale 10**18 Nm Mrr=-1.60 Mtt= 1.10 Mpp= 0.50 Mrt=-0.39 Mrp=-0.16 Mtp=-0.45 Principal axes: T Val= 1.36 Plg= 5 Azm=206 N = 0.31 9 115 P = -1.68 79 326 Best Double Couple:Mo=1.5*10**18 NP1:Strike=307 Dip=40 Slip= -75 NP2: 108 51 -101
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.
