USGS WPhase Moment Solution
GUERRERO, MEXICO
11/12/11 1:47:26.00 Epicenter: 18.038 -99.795 MW 6.5 USGS/WPHASE CENTROID MOMENT TENSOR 11/12/11 1:47:26.00 Centroid: 18.038 -99.690 Depth 60 No. of sta: 54 Moment Tensor; Scale 10**18 Nm Mrr=-5.96 Mtt= 5.56 Mpp= 0.40 Mrt=-2.75 Mrp=-0.01 Mtp=-1.31 Principal axes: T Val= 6.45 Plg=12 Azm=192 N = 0.14 5 101 P = -6.59 76 348 Best Double Couple:Mo=6.5*10**18 NP1:Strike=289 Dip=33 Slip= -80 NP2: 98 57 -96
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.
