USGS WPhase Moment Solution
SALTA, ARGENTINA
12/11/22 13: 7:5.00 Epicenter: -22.665 -63.488 MW 5.9 USGS/WPHASE CENTROID MOMENT TENSOR 12/11/22 13: 7: 5.00 Centroid: -22.665 -63.704 Depth 510 No. of sta: 31 Moment Tensor; Scale 10**17 Nm Mrr=-2.83 Mtt= 0.13 Mpp= 2.71 Mrt=-2.25 Mrp= 6.09 Mtp= 4.98 Principal axes: T Val= 8.00 Plg=22 Azm=296 N = 1.16 37 188 P = -9.16 43 49 Best Double Couple:Mo=8.6*10**17 NP1:Strike= 72 Dip=41 Slip= -20 NP2: 178 77 -128
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.
