USGS Centroid Moment Solution
SANTIAGO DEL ESTERO, ARGENTINA
12/05/28 05:07:23.02 Epicenter: -28.061 -63.016 MW 6.7 USGS CENTROID MOMENT TENSOR 12/05/28 05:07:36.59 Centroid: -28.104 -62.761 Depth 595 No. of sta: 29 Moment Tensor; Scale 10**19 Nm Mrr=-0.74 Mtt=-0.15 Mpp= 0.88 Mrt=-0.55 Mrp= 0.95 Mtp= 0.02 Principal axes: T Val= 1.35 Plg=26 Azm=260 N 0.03 16 162 P -1.38 58 43 Best Double Couple:Mo=1.4*10**19 NP1:Strike= 24 Dip=24 Slip= -46 NP2: 157 73 -107
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.
