USGS Centroid Moment Solution
PACIFIC-ANTARCTIC RIDGE
13/01/15 16:09:37.09 Epicenter: -62.580 -161.396 MW 6.1 USGS CENTROID MOMENT TENSOR 13/01/15 16:09:57.29 Centroid: -62.654 -161.583 Depth 26 No. of sta: 69 Moment Tensor; Scale 10**18 Nm Mrr=-0.16 Mtt= 2.02 Mpp=-1.86 Mrt= 0.37 Mrp= 0.19 Mtp= 0.42 Principal axes: T Val= 2.12 Plg=10 Azm=354 N -0.21 79 201 P -1.92 5 84 Best Double Couple:Mo=2.0*10**18 NP1:Strike= 39 Dip=87 Slip= 170 NP2: 129 80 3
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.
