USGS Centroid Moment Solution
GUERRERO, MEXICO
12/11/15 09:20:22.66 Epicenter: 18.386 -100.398 MW 6.1 USGS CENTROID MOMENT TENSOR 12/11/15 09:20:40.59 Centroid: 18.546 -99.862 Depth 53 No. of sta: 26 Moment Tensor; Scale 10**18 Nm Mrr=-2.08 Mtt= 1.59 Mpp= 0.49 Mrt=-0.54 Mrp=-0.01 Mtp=-0.59 Principal axes: T Val= 1.91 Plg= 7 Azm=203 N 0.25 5 112 P -2.16 81 346 Best Double Couple:Mo=2.0*10**18 NP1:Strike=108 Dip=52 Slip= -97 NP2: 299 38 -81
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.
