USGS Centroid Moment Solution
SOUTH SHETLAND ISLANDS
12/01/15 13:40:16.65 Epicenter: -60.793 -55.729 MW 6.6 USGS CENTROID MOMENT TENSOR 12/01/15 13:40:33.90 Centroid: -60.265 -55.656 Depth 21 No. of sta: 70 Moment Tensor; Scale 10**19 Nm Mrr= 0.01 Mtt= 0.85 Mpp=-0.85 Mrt= 0.03 Mrp= 0.85 Mtp= 0.10 Principal axes: T Val= 0.87 Plg=10 Azm=352 N 0.51 57 246 P -1.37 31 88 Best Double Couple:Mo=1.1*10**19 NP1:Strike=224 Dip=76 Slip=-149 NP2: 125 60 -16
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.
