USGS Centroid Moment Solution
KERMADEC ISLANDS REGION
11/10/21 17:57:16.81 Epicenter: -29.003 -176.188 MW 7.4 USGS CENTROID MOMENT TENSOR 11/10/21 17:57:41.29 Centroid: -28.563 -175.844 Depth 47 No. of sta: 205 Moment Tensor; Scale 10**20 Nm Mrr= 1.44 Mtt=-0.27 Mpp=-1.17 Mrt= 0.20 Mrp= 0.22 Mtp=-0.66 Principal axes: T Val= 1.47 Plg=84 Azm=325 N 0.08 3 208 P -1.55 6 118 Best Double Couple:Mo=1.5*10**20 NP1:Strike= 31 Dip=51 Slip= 94 NP2: 205 40 86
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.
