USGS Centroid Moment Solution
VANUATU
12/12/21 22:28:07.18 Epicenter: -14.388 167.262 MW 6.7 USGS CENTROID MOMENT TENSOR 12/12/21 22:28:28.09 Centroid: -14.305 167.371 Depth 198 No. of sta: 25 Moment Tensor; Scale 10**19 Nm Mrr= 1.26 Mtt=-0.07 Mpp=-1.18 Mrt=-0.35 Mrp=-0.04 Mtp= 0.40 Principal axes: T Val= 1.35 Plg=75 Azm=168 N -0.04 15 341 P -1.31 2 72 Best Double Couple:Mo=1.3*10**19 NP1:Strike=328 Dip=48 Slip= 70 NP2: 177 45 111
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.
