USGS Centroid Moment Solution
HAIDA GWAII, CANADA
12/10/30 02:49:01.47 Epicenter: 52.323 -131.918 MW 6.2 USGS CENTROID MOMENT TENSOR 12/10/30 02:49:26.40 Centroid: 52.272 -131.955 Depth 10 No. of sta: 55 Moment Tensor; Scale 10**18 Nm Mrr=-2.34 Mtt= 1.53 Mpp= 0.81 Mrt= 0.03 Mrp= 0.54 Mtp=-1.09 Principal axes: T Val= 2.34 Plg= 4 Azm=217 N 0.10 10 307 P -2.44 79 108 Best Double Couple:Mo=2.4*10**18 NP1:Strike=136 Dip=49 Slip= -76 NP2: 296 42 -105
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.
