USGS Centroid Moment Solution
KERMADEC ISLANDS, NEW ZEALAND
13/02/18 12:19:19.02 Epicenter: -30.680 -178.150 MW 5.9 USGS CENTROID MOMENT TENSOR 13/02/18 12:19:35.90 Centroid: -30.585 -178.745 Depth 49 No. of sta: 53 Moment Tensor; Scale 10**17 Nm Mrr= 8.26 Mtt=-2.04 Mpp=-6.22 Mrt= 0.87 Mrp=-2.77 Mtp=-2.33 Principal axes: T Val= 8.93 Plg=77 Azm= 59 N -1.36 10 200 P -7.57 8 292 Best Double Couple:Mo=8.3*10**17 NP1:Strike= 34 Dip=38 Slip= 107 NP2: 192 54 77
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.
